1987 Developmental Stages In Human Embryos - Appendix 1
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O'Rahilly R. and Müller F. Developmental Stages in Human Embryos. Contrib. Embryol., Carnegie Inst. Wash. 637 (1987).
Online Editor Note |
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O'Rahilly R. and Müller F. Developmental Stages in Human Embryos. Contrib. Embryol., Carnegie Inst. Wash. 637 (1987).
The original 1987 publication text, figures and tables have been altered in formatting, addition of internal online links, and links to PubMed. Original Document - Copyright © 1987 Carnegie Institution of Washington.
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- 1987 Stages: Introduction | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | References | Appendix 1 | Appendix 2 | Historic Papers | Embryonic Development
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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History | Historic Embryology Papers) |
Appendix 1 - Embryos In The Carnegie Collection
The Carnegie specimens of stages 2-23 are listed in the following tables.
In columns "Size" (stage 9 and later), E. is the greatest length of the embryo and Ch. is the mean diameter of the chorion. In stages 16-18, an asterisk indicates a corrected or an estimated length. The grade refers to the total grade of the specimen and includes both its original quality and the condition of the mounted sections. The embedding medium was either paraffin (P) or a combination of celloidin and paraffin (C-P).
In stages 9-12 the number of paired somites is provided. In stage 18 the number of semicircular ducts (1-3) is given for each embryo, and also the length of the paramesonephric duct. Both of these serve as indices of relative level of development. In stages 19- 23 Streeter's point score, from which the position of a given Carnegie embryo within a stage can be determined, is included (see Introduction To Stages 19-23).
The donors of most of these valuable specimens were named by Streeter (1942-1951) and O'Rahilly (1973). All those of stages 2, 3, 5a, and 5b, most of those of stage 5c, and many of those of stages 6 and 7 were presented by Drs. Hertig and Rock, whose contribution has been of enormous value to early human embryology.
The specimens in the excellent embryological collection of Professor E. Blechschmidt were assigned Carnegie Nos. 10315-10434 in 1972 because Professor Blechschmidt's wish was and is to have his collection combined with the Carnegie Collection. The Blechschmidt Collection is at present housed temporarily in the Department of Anatomy of Louisiana State University, New Orleans, and is under the care of Dr. Raymond F. Gasser. The collection has served as the basis of two important atlases (Blechschmidt, 1963, 1973), and the appropriate three-dimensional reconstructions are housed in the Anatomisches Institut der Universitat Gottingen. The staging of these embryos has not been completed and hence they are not in- cluded in the following lists.
Stage 2
Serial No. | Normality | No. of Blastomeres | Size of Fixed Specimen (µm) | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
8190 | abnormal | 9 | 160x104 | Alc. & Bouin | C-P | 6 | Iron h., or G | 1943 | Hertig et al. (1954) |
8260 | in vitro | 2 | 50x75 | Bouin | C-P | 8 | (Stain - Haematoxylin Eosin) | 1944 | Menkin and Rock (1948) |
8450 | abnormal | 8 | 100x96 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1947 | Hertig et al. (1954) |
8452 | abnormal | 12 | 110x93 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1946 | Hertig et al. (1954) |
8500.1 | in vitro | 3 | 50x86 | Bouin | C-P | 8 | (Stain - Haematoxylin Eosin). | 1947 | Menkin and Rock (1948) |
8630 | abnormal | 5 | 104x94 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1948 | Hertig et al. (1954) |
8698 | normal | 2 | 122x88 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1949 | Hertig et al. (1954) |
8904 | normal | 12 | 115 | Bouin | Specimen lost | 1951 | Hertig et al. (1954) |
1987 - Stage 2 | Carnegie stage 2
Carnegie Collection - Stage 2 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Normality | No. of Blastomeres | Size of Fixed Specimen (µm) | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes | |
8190 | abnormal | 9 | 160x104 | Alc. & Bouin | C-P | 6 | Iron h., or G | 1943 | Hertig et al. (1954) | |
8260 | in vitro | 2 | 50x75 | Bouin | C-P | 8 | (Stain - Haematoxylin Eosin) | 1944 | Menkin and Rock (1948) | |
8450 | abnormal | 8 | 100x96 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1947 | Hertig et al. (1954) | |
8452 | abnormal | 12 | 110x93 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1946 | Hertig et al. (1954) | |
8500.1 | in vitro | 3 | 50x86 | Bouin | C-P | 8 | (Stain - Haematoxylin Eosin) | 1947 | Menkin and Rock (1948) | |
8630 | abnormal | 5 | 104x94 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1948 | Hertig et al. (1954) | |
8698 | normal | 2 | 122x88 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1949 | Hertig et al. (1954) | |
8904 | normal | 12 | 115 | Specimen lost | 1951 | Hertig et al. (1954) | ||||
Abbreviations
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Stage 3
Serial No. | Normality | No. of Blastomeres | Size of Fixed Specimen (µm) | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
8663 | normal | 107 | 103x80 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1949 | Hertig et al. (1954) |
8794 | normal | 58 | 108x86 | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1950 | Hertig et al. (1954) |
1987 - Stage 3 | Carnegie stage 3
Stage 5
Stage 5a
Serial No. | Grade | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|
8020 | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1942 | Hertig and Rock (1945a) |
8155 | Exc. | Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1943 | Hertig and Rock (1949) |
8225 | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1944 | Hertig and Rock (1945b) |
1987 - Stage 5a | 1987 - Stage 5 | Carnegie stage 5
Stage 5b
Serial No. | Grade | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|
8004 | Exc | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1942 | Hertig and Rock (1945a) |
8171 | Exc | Alc. | C-P | 6 | (Stain - Haematoxylin Eosin) | 1943 | Hertig and Rock (1949) |
8215 | Exc | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1944 | Hertig and Rock (1945c) |
9350 | Exc | Bouin | ? | ? | (Stain - Haematoxylin Eosin) | 1955 | Heuser (1956) |
1987 - Stage 5b | 1987 - Stage 5 | Carnegie stage 5
Stage 5c
Serial No. | Grade | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|
4900 | Poor | p | P | 10 | p | 1925 | Incomplete. Streeter (1926) |
7699 | Exc. | Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1939 | Hertigand Rock (1941) |
7700 | Exc. | Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1938 | Hertigand Rock (1941) |
7770 | Exc. | Bouin | C-P | 6 & 10 | (Stain - Haematoxylin Eosin) | 1940 | Abnormal |
7771 | Exc. | Bouin | C-P | 10 | (Stain - Haematoxylin Eosin) | 1940 | Abnormal |
7950 | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1941 | Hertig and Rock (1944) |
8000 | Poor | Alc. & Bouin | C-P | 8 | (Stain - Haematoxylin Eosin) | 1942 | Abnormal |
8139 | Exc. | ? | C-P | 6 | (Stain - Haematoxylin Eosin) | 1943 | Incomplete. Marchetti (1945) |
8299 | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1945 | Abnormal |
8329 | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1945 | Abnormal |
8330 | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1945 | |
8370 | Poor | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1946 | Abnormal |
8558 | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1947 |
1987 - Stage 5c | 1987 - Stage 5 | Carnegie stage 5
Carnegie Collection - Stage 5 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Stage | Grade | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes | ||
8020 | 5a | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1942 | Hertig and Rock (1945a)[1] | ||
8155 | 5a | Exc. | Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1943 | Hertig and Rock (1949)[2] | ||
8225 | 5a | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1944 | Hertig and Rock (1945b)[3] | ||
8004 | 5b | Exc | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1942 | Hertig and Rock (1945a)[1] | ||
8171 | 5b | Exc | Alc. | C-P | 6 | (Stain - Haematoxylin Eosin) | 1943 | Hertig and Rock (1949)[2] | ||
8215 | 5b | Exc | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1944 | Hertig and Rock (1945c)[4] | ||
9350 | 5b | Exc | Bouin | ? | ? | (Stain - Haematoxylin Eosin) | 1955 | Heuser (1956)[5] | ||
4900 | 5c | Poor | p | P | 10 | p | 1925 | Incomplete. Streeter (1926)[6] | ||
7699 | 5c | Exc. | Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1939 | Hertig and Rock (1941)[7] | ||
7700 | 5c | Exc. | Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1938 | Hertig and Rock (1941)[7] | ||
7771 | 5c | Exc. | Bouin | C-P | 10 | (Stain - Haematoxylin Eosin) | 1940 | Abnormal | ||
7950 | 5c | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1941 | Hertig and Rock (1944)[8] | ||
8000 | 5c | Poor | Alc. & Bouin | C-P | 8 | (Stain - Haematoxylin Eosin) | 1942 | Abnormal | ||
8139 | 5c | Exc. | ? | C-P | 6 | (Stain - Haematoxylin Eosin) | 1943 | Incomplete. Marchetti (1945)[9] | ||
8299 | 5c | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1945 | Abnormal | ||
8329 | 5c | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1945 | Abnormal | ||
8330 | 5c | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1945 | |||
8370 | 5c | Poor | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin), phlox. | 1946 | Abnormal | ||
8558 | 5c | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1947 | |||
Stage 5 was originally subdivided into 3 sequential parts a, b, c.
Abbreviations
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References
|
Stage 6
Serial No. Grade Embedding Medium ? P P P P C-P STAGE 6 Thinness 6026 Poor 6734 Poor 6900 Poor 7634 Poor 7762 Good 7800 Exc. 7801 Exc. 7850 Exc. 8290 Exc. 8360 Exc. 8362 Poor p 6? 10 15 10 8 8 8 6 8 6 6 6 8 6 8 H.&E. H.&E. H.&E. H.&E. ? H.&E. H.&E. H.&E. H. phlox. H.&E., phlox. H.&E., phlox H.&E. H.&E. H.&E., phlox. H.&E., phlox. Azan 8672 Exc. 8819 Exc. 8905 Poor 8910 Good Formol 9222 Good Bouin 9250 Exc. Bouin 9595 Poor p 10003 Good Bouin 6& 10 8 H.&E. 1954 8 H.&E. 1958 5 V arious 1963 Fixative ? Zenker-acetic Formol Formol Zenker-formol Stain Y ear Notes 1929 Lockyer embryo. Abnormal. Ramsey (1937) 1934 Yale embryo. Ramsey (1938) 1940 Linzenmeier (1914) 1940 Torpin embryo. Krafka (1941) 1940 Wilson (1945) 1940 Abnormal 1940 Heuser et al. (1945) 1940 Abnormal 1944 1944 1944 1949 1951 Edwards-Jones-Brewer (H.I496). Brewer (1938) 1951 Abnormal 1951 1954 Abnormal. Possibly stage 7 Bouin C-P Ale. & Bouin C-P Bouin C-P Ale. & Bouin C-P C-P C-P C-P p C-P C-P p p p Ale. & Bouin Formol-chrom. subl. Ale. etc.
1987 - Stage 6 | Carnegie stage 6
Stage 7
Serial No. | Grade | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|
7802 | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1940 | Heuser et al. (1945) |
8206 | Good | p | C-P | 6 | (Stain - Haematoxylin Eosin) | 1943 | |
8361 | Good | Bouin | C-P | 10 | p | 1946 | Abnormal |
8602 | Exc. | Alc. | C-P | 8 | (Stain - Haematoxylin Eosin) | 1948 | |
8752 | Exc. | ? | C-P | 10 | (Stain - Haematoxylin Eosin) | 1950 | |
8756 | Exc. | Formol | C-P | 10 | (Stain - Haematoxylin Eosin) | 1950 | |
9217 | Exc. | p | P | 10 | (Stain - Haematoxylin Eosin) | 1954 |
1987 - Stage 7 | Carnegie stage 7
Carnegie Collection - Stage 7 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Grade | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes | |||
7802 | Exc. | Alc. & Bouin | C-P | 6 | (Stain - Haematoxylin Eosin) | 1940 | Heuser et al. (1945) | |||
8206 | Good | p | C-P | 6 | (Stain - Haematoxylin Eosin) | 1943 | ||||
8361 | Good | Bouin | C-P | 10 | p | 1946 | Abnormal | |||
8602 | Exc. | Alc. | C-P | 8 | (Stain - Haematoxylin Eosin) | 1948 | ||||
8752 | Exc. | ? | C-P | 10 | (Stain - Haematoxylin Eosin) | 1950 | ||||
8755 | Exc. | Formol | C-P | 10 | (Stain - Haematoxylin Eosin) | 1950 | ||||
9217 | Exc. | p | P | 10 | (Stain - Haematoxylin Eosin) | 1954 | ||||
Abbreviations
|
Stage 8
Serial No. | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|
1399 | Poor | Formol | P | Trans. | 10 | (Stain - Haematoxylin Eosin) etc. | 1916 | "Mateer embryo" described by Streeter (1920a) |
3412 | Poor | Formol | P | Trans. | 5-15 | Al. coch. E. au., or. | 1921 | |
5960 | Good | Kaiserling | P | Trans. | 5 | Al. coch. & eosin | 1929 | Heuser (1932b) |
6630 | Poor | Formol | P | Oblique | 6 | (Stain - Haematoxylin Eosin) | 1932 | |
6815 | Poor | Formol | P | Oblique | 10 | Al. coch., or. G | 1933 | |
7170a and b 7545 | Poor | Alc. | C-P | Trans. | 6 | (Stain - Haematoxylin Eosin) | 1935 | Twins |
7568 | Poor | Formoi | C-P | Trans. | 6 | (Stain - Haematoxylin Eosin) | 1938 | |
7640 | Good | Formol & Bouin | P | Trans. | 10 | (Stain - Haematoxylin Eosin) | 1939 | George (1942) |
7666 | Exc. | Formol-chrom. subl. | C-P | Trans. | 6 | (Stain - Haematoxylin Eosin) | 1939 | "H. 1515" |
7701 | Exc. | ? | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1939 | |
7822 | Good | Formoi | C-P | Trans. | 10 | (Stain - Haematoxylin Eosin) | 1940 | |
7949 | Good | Zenker | p | Sag. | 10 | (Stain - Haematoxylin Eosin) etc. | 1941 | |
7972 | Good | Alc. & Bouin | C-P | Sag. | 6 | (Stain - Haematoxylin Eosin) | 1942 | |
8255 | Exc. | Bouin | C-P | Sag. | 8 | (Stain - Haematoxylin Eosin), phlox. | 1944 | Slides showing embryo returned to Dr. Patten in 1962 |
8320 | Good | Formol | C-P | Sag. | 8 | (Stain - Haematoxylin Eosin), phlox. | 1945 | |
8352 | Good | Formol | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin), phlox. | 1946 | |
8371 | Poor | Alc. & Bouin | C-P | Sag. | 8 | (Stain - Haematoxylin Eosin), phlox. | 1946 | |
8671 | Exc. | Alc. & Bouin | C-P | Sag. | 6 | (Stain - Haematoxylin Eosin), phlox. | 1949 | |
8725 | Exc. | Alc. & Bouin | C-P | Sag. | 6 | (Stain - Haematoxylin Eosin), phlox. | 1949 | |
8727 | Exc. | Alc. & Bouin | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin), phlox. | 1949 | Germ disc folded, possibly double (Hertig, 1968, fig. 180) |
8820 | Good | Zenker-formol | ? | Trans. | 10 | (Stain - Haematoxylin Eosin) | 1951 | "Jones-Brewer I" (H. 1459) described byJones and Brewer (1941) |
9009a and b 9123 | Good | Formol | C-P | Sag. | 6 | (Stain - Haematoxylin Eosin) | 1952 | Twins described briefly by Heuser (1954) |
9123 | Good | Formol | C-P | Sag. | 6 | (Stain - Haematoxylin Eosin) | 1953 | |
9251 | Good | ? | C-P | Sag. | 10-12 | Azan, H. & phlox. | 1954 | |
9286 | Exc. | Formol | C-P | Trans. | 8 | Azan | 1955 | |
10157 | Exc. | Formol | C-P | Trans. | ? | Cason | 1967 | |
10174 | Exc. | Bouin | p | Trans. | 8 | Cason | 1967 |
1987 - Stage 8 | Carnegie stage 8
Carnegie Collection - Stage 8 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes | ||
1399 | Poor | Formol | P | Transverse | 10 | (Stain - Haematoxylin Eosin) etc. | 1916 | "Mateer embryo" described by Streeter (1920a)[1] | ||
3412 | Poor | Formol | P | Transverse | 5-15 | Al. coch. E. au., or. | 1921 | |||
5960 | Good | Kaiserling | P | Transverse | 5 | Al. coch. & eosin | 1929 | Heuser (1932b)[2] | ||
6630 | Poor | Formol | P | Oblique | 6 | (Stain - Haematoxylin Eosin) | 1932 | |||
6815 | Poor | Formol | P | Oblique | 10 | Al. coch., or. G | 1933 | |||
7170a and b 7545 | Poor | Alc. | C-P | Transverse | 6 | (Stain - Haematoxylin Eosin) | 1935 | Twins | ||
7568 | Poor | Formoi | C-P | Transverse | 6 | (Stain - Haematoxylin Eosin) | 1938 | |||
7640 | Good | Formol & Bouin | P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1939 | George (1942)[3] | ||
7666 | Exc. | Formol-chrom. subl. | C-P | Transverse | 6 | (Stain - Haematoxylin Eosin) | 1939 | "H. 1515" | ||
7701 | Exc. | ? | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1939 | |||
7822 | Good | Formoi | C-P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1940 | |||
7949 | Good | Zenker | p | Sagittal | 10 | (Stain - Haematoxylin Eosin) etc. | 1941 | |||
7972 | Good | Alc. & Bouin | C-P | Sagittal | 6 | (Stain - Haematoxylin Eosin) | 1942 | |||
8255 | Exc. | Bouin | C-P | Sagittal | 8 | (Stain - Haematoxylin Eosin), phlox. | 1944 | Slides showing embryo returned to Dr. Patten in 1962 | ||
8320 | Good | Formol | C-P | Sagittal | 8 | (Stain - Haematoxylin Eosin), phlox. | 1945 | |||
8352 | Good | Formol | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin), phlox. | 1946 | |||
8371 | Poor | Alc. & Bouin | C-P | Sagittal | 8 | (Stain - Haematoxylin Eosin), phlox. | 1946 | |||
8671 | Exc. | Alc. & Bouin | C-P | Sagittal | 6 | (Stain - Haematoxylin Eosin), phlox. | 1949 | |||
8725 | Exc. | Alc. & Bouin | C-P | Sagittal | 6 | (Stain - Haematoxylin Eosin), phlox. | 1949 | Preparation method described by Heard (1957)[4] | ||
8727 | Exc. | Alc. & Bouin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin), phlox. | 1949 | Germ disc folded, possibly double (Hertig, 1968, fig. 180)[5] | ||
8820 | Good | Zenker-formol | ? | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1951 | "Jones-Brewer I" (H. 1459) described by Jones and Brewer (1941)[6] | ||
9009a and b 9123 | Good | Formol | C-P | Sagittal | 6 | (Stain - Haematoxylin Eosin) | 1952 | Twins described briefly by Heuser (1954)[7] | ||
8371 | Good | Formol | C-P | Sagittal | 6 | (Stain - Haematoxylin Eosin) | 1953 | |||
9251 | Good | ? | C-P | Sagittal | 10-12 | Azan, H. & phlox. | 1954 | |||
9286 | Exc. | Formol | C-P | Transverse | 8 | Azan | 1955 | |||
10157 | Exc. | Formol | C-P | Transverse | ? | Cason | 1967 | |||
10174 | Exc. | Bouin | p | Transverse | 8 | Cason | 1967 | |||
Abbreviations
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References
|
Stage 9
Serial No. | Pairs of somites | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|---|
1878 | 2-3 | E., 1.38 Ch., 12X10.5X7.5 |
Good | Formol | P | Cor. | 10 | (Stain - Haematoxylin Eosin) | 1917 | Described by Ingalls (1920) |
5080 | 1 | E., 1.5 Ch., 14.5 |
Poor | Formol | P | Trans. | 10 | Al. coch. | 1926 | Studied by Davis (1927) |
7650 | 2-3 | E., 2-3 | Good | Alc & Bouirl | C-P | Trans. | 6 | (Stain - Haematoxylin Eosin) | 1939 | Said to be female (Park, 1957) |
1987 - Stage 9 | Carnegie stage 9
Carnegie Collection - Stage 9 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Pairs of somites | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
1878 | 2-3 | Embryo, 1.38 Ch., 12x10.5x7.5 |
Good | Formalin | P | Coronal | 10 | (Stain - Haematoxylin Eosin) | 1917 | Described by Ingalls (1920).[1] |
5080 | 1 | Embryo, 1.5 Ch., 14.5 |
Poor | Formalin | P | Transverse | 10 | Al. coch. | 1926 | Studied by Davis (1927).[2] |
7650 | 2-3 | Embryo, 2-3 | Good | Alc & Bouin | C-P | Transverse | 6 | (Stain - Haematoxylin Eosin) | 1939 | Said to be female[3] |
Abbreviations
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References
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Stage 10
All sections at stage 10 are transverse
Serial No. | Pairs of somites | Size (mm) | Grade | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
391 | 8 | E, 2 Ch., 14 | Good | Formol | P | 10 | Al. coch. | 1907 | Monograph by Dandy (1910) |
1201 | 7 | E,2 Ch.. 144 | Good | Formol | P | 8 | H. & or. G. | 1915 | Univ. Chicago No. H 87 |
2795 | 4-5 | E,2 | Poor | Alc. | P | 6 | Alcoch,or.G. | 1919 | |
3??0?? | 12 | E, 1 5 | Good | Formol | P | 12.5 | I. H. | 1921 | Univ. Calif. No. H 19"7 |
3??09 | 4 | E. 1.4 Ch.. 14.8 | Poor | Formol | P | 10 | Erythrosin | 1921 | Univ. Chicago No H 279 |
3710 | 12 | E., 3.6 Ch., 19.0 | Good | Formol | C-P | 10 | H. & or. G. | 1921 | Univ. Chicago No. H 392 |
4216 | 8 | E, 2 Ch, 9.8 | Good | Formol | P | 15 | ? | 1923 | Monograph by Payne (1925) |
5074 | 10 | E., 3.3 Ch., 10.8 | Exc. | Bouin | P | 10 | Al. coch. | 1925 | Univ. Rochester No. H 10. Monograph by Corner (1929) |
6330 | 7 | E, 2.83 | Good | P | 5 | Ehr. H. | 1931 | Univ. Chicago No. H 1404 | |
6740 | 12 | E., 2.2 | Good | p | C-P | 8 | ? | 1933 | Litzenberg embryo. Studied by Boyden (1940) |
7251 | 8 | E., 1.27 | Good | Formol | C-P | 10 | (Stain - Haematoxylin Eosin) | 1941 | "Singapore embryo." Univ. Cambridge No. H 98. Studied by Wilson (1914) |
8244 | 6 | E., 1.55 Ch, 8,5 | Good | Alc. | C-P | 8 | (Stain - Haematoxylin Eosin) phlox. | 1944 | |
8970 | 12 | Ch, ca. 8 | Good | Zenker | P | 5 | Various, chiefly carmine | 1952 | Univ. Chicago. No. H 637. Dicephaly |
1987 - Stage 9 | Carnegie stage 10
Carnegie Collection - Stage 10 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Pairs of somites | Size (mm) | Grade | Fixative | Embedding Medium | Thinness (µm) | Stain | Year | Notes | |
391 | 8 | E, 2 Ch., 14 | Good | Formalin | P | 10 | Al. coch. | 1907 | Monograph by Dandy (1910)[1] | |
1201 | 7 | E,2 Ch.. 144 | Good | Formalin | P | 8 | H. & or. G. | 1915 | Univ. Chicago No. H 87 | |
2795 | 4-5 | E,2 | Poor | Alc. | P | 6 | Al coch,or.G. | 1919 | ||
3707 | 12 | E, 1 5 | Good | Formalin | P | 12.5 | I. H. | 1921 | Univ. Calif. No. H 197 | |
3709 | 4 | E. 1.4 Ch.. 14.8 | Poor | Formalin | P | 10 | Erythrosin | 1921 | Univ. Chicago No H 279 | |
3710 | 12 | E., 3.6 Ch., 19.0 | Good | Formalin | C-P | 10 | H. & or. G. | 1921 | Univ. Chicago No. H 392 | |
4216 | 8 | E, 2 Ch, 9.8 | Good | Formalin | P | 15 | ? | 1923 | Monograph by Payne (1925)[2] | |
5074 | 10 | E., 3.3 Ch., 10.8 | Exc. | Bouin | P | 10 | Al. coch. | 1925 | Univ. Rochester No. H 10. Monograph by Corner (1929)[3] | |
6330 | 7 | E, 2.83 | Good | P | 5 | Ehr. H. | 1931 | Univ. Chicago No. H 1404 | ||
6740 | 12 | E., 2.2 | Good | p | C-P | 8 | ? | 1933 | Litzenberg embryo. Studied by Boyden (1940) | |
7251 | 8 | E., 1.27 | Good | Formalin | C-P | 10 | (Stain - Haematoxylin Eosin) | 1941 | "Singapore embryo." Univ. Cambridge No. H 98. Studied by Wilson (1914)[4] | |
8244 | 6 | E., 1.55 Ch, 8,5 | Good | Alc. | C-P | 8 | (Stain - Haematoxylin Eosin) phlox. | 1944 | ||
9870 | 12 | Ch, ca. 8 | Good | Zenker | P | 5 | Various, chiefly carmine | 1952 | Univ. Chicago. No. H 637. Dicephaly | |
Abbreviations
|
Stage 11
Serial No. | Pairs of somites | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|---|
12 | 14 | E, 2.1 Ch, 13 | Poor | P | Trans. | 10 | Al. carm. | 1893 | ||
164 | 18 | E, 3.5 Ch, 14 | Good | Formol | P | Trans. | 20 | Al. carm. | 1913 | |
318 | 13/14 | E, 2.5 Ch, 16 | Good | P | Trans. | 25 | Al. carm. | 1905 | ||
470 | 17 | E, 4.3 Ch, 16 | Good | Formol | P | Trans. | 10 | Al. carm. | 1910 | |
779 | 14 | E, 2.75 | Good | C | Trans. | 15 | Al. coch. | 1913 | Complete dysraphia. Studied by Dekaban and Bartelmez (1964) | |
1182b | E, 3 Ch, 15x12x5 | Good | Formol | ? | Trans. | 20 | Al. carm. | 1915 | ||
2053 | 20 | E, 3.1 Ch, 12 | Exc. | Formol | P | Trans. | 10 | Al. coch. | 1918 | Most advanced in group. Monograph by Davis (1923). Ag added to slide 2 |
4315 | 17 | E, 4.7 Ch, 23x10.4X11 | Exc. | ? | C-P | Trans. | 10 | I.H. & E. | 1923 | Univ. Chicago No. 951. Studied by Wen (1928) |
4529 | 14 | E, 2.4 Ch, 21 | Exc. | Formol | P | Trans. | 10 | Al. coch, or. G. | 1924 | Monograph by Heuser (1930) |
4783 | 13 | E, 2.3 | Fair | ? | ? | Trans. | 5 | I.H. | 1924 | Monograph by Wallin (1913) |
4877 | 13 | E, 2 Ch, 15 | Good | Formol | P | Trans. | 15 | Al. coch. | 1925 | |
5072 | 17 | E, 3 | Good | Formol | P | Trans. | 10 | (Stain - Haematoxylin Eosin) | 1925 | Tubal. Type specimen. Monograph by Atwell (1930) |
6050 | 19/21 | E.,3 Ch, 10 | Good | Formol | C-P | Cor. | 10 | Al. coch. | 1930 | Advanced |
6344 | 13 | E, 2.5 Ch, 17 | Exc. | Formol | C-P | Trans | 6 | Al. coch. | 1931 | Least advanced in group |
6784 | 17 | E, 5 Ch, 16 | Exc. | Formol | C-P | Trans | 6 | I.H, or. G. | 1933 | |
7358 | 16 | E, ? Ch, 15 | Poor | Alc, formol | p | Oblique | 25 | (Stain - Haematoxylin Eosin) | 1936 | |
7611 | 16 | E., 2.4 Ch., 12 | Exc. | Bouin | C-P | Trans | 8 | (Stain - Haematoxylin Eosin) | 1938 | |
7665 | 19 | E., 4.36 | Exc. | ? | C-P | Trans | 6 | 1939 | Univ. Chicago No. H 1516 | |
7702 | 17 | E, 3.7 Ch., 14 | Good | Formol | C-P | Trans | 10 | Al. coch. | 1940 Returned to B M Patten | |
7851 | 13 | E., 4.3 Ch, 18 | Exc. | Formol | C-P | Trans | 8 | (Stain - Haematoxylin Eosin) | 1940 | Slightly injured |
8005 | 16/17 | E, 3 | Exc. | Bouin | C-P | Trans | 8 | (Stain - Haematoxylin Eosin) | 1942 | Tubal. |
8116 | 17 | E, 14 Ch.. 17 | Good | Formol | p | Sag. | 8 | Azan | 1953 | |
8962 | 15 | E, 1.55 | Good | ? | * | Sag. | ? | ? | 1952 | Tubal. I'ntv Chicago No H 810 |
Carnegie Collection - Stage 11 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Pairs of somites | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
12 | 14 | E, 2.1 Ch, 13 | Poor | P | Transverse | 10 | Al. carm. | 1893 | ||
164 | 18 | E, 3.5 Ch, 14 | Good | Formalin | P | Transverse | 20 | Al. carm. | 1913 | |
318 | 13/14 | E, 2.5 Ch, 16 | Good | P | Transverse | 25 | Al. carm. | 1905 | ||
470 | 17 | E, 4.3 Ch, 16 | Good | Formalin | P | Transverse | 10 | Al. carm. . | 1910 | |
779 | 14 | E, 2.75 | Good | C | Transverse | 15 | Al. coch. | 1913 | Dysraphism. Noted by Dekaban (1964)[5] | |
1182b | E, 3 Ch, 15x12x5 | Good | Formalin | ? | Transverse | 20 | Al. carm. | 1915 | ||
2053 | 20 | E, 3.1 Ch, 12 | Exc. | Formalin | P | Transverse | 10 | Al. coch. | 1918 | Most advanced in group. Ag added to slide 2 Monographs by Davis (1923)[6] and Congdon (1922)[7] |
4315 | 17 | E, 4.7 Ch, 23x10.4X11 | Excellent | ? | C-P | Transverse | 10 | I.H. & E. | 1923 | Univ. Chicago No. 951. Wen (1928)[8] |
4529 | 14 | E, 2.4 Ch, 21 | Excellent | Formalin | P | Transverse | 10 | Al. coch, or. G. | 1924 | Heuser (1930)[9] |
4783 | 13 | E, 2.3 | Fair | ? | ? | Transverse | 5 | I.H. | 1924 | Wallin (1913)[10] |
4877 | 13 | E, 2 Ch, 15 | Good | Formalin | P | Transverse | 15 | Al. coch. | 1925 | |
5072 | 17 | E, 3 | Good | Formalin | P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1925 | Tubal Type specimen. Atwell (1930)[11] |
6050 | 19/21 | E.,3 Ch, 10 | Good | Formalin | C-P | Coronal | 10 | Al. coch. | 1930 | Advanced |
6344 | 13 | E, 2.5 Ch, 17 | Excellent | Formalin | C-P | Transverse | 6 | Al. coch. | 1931 | Least advanced in group |
6784 | 17 | E, 5 Ch, 16 | Excellent | Formalin | C-P | Transverse | 6 | I.H, or. G. | 1933 | |
7358 | 16 | E, ? Ch, 15 | Poor | Alc, formol | p | Oblique | 25 | (Stain - Haematoxylin Eosin) | 1936 | |
7611 | 16 | E., 2.4 Ch., 12 | Excellent | Bouin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1938 | |
7665 | 19 | E., 4.36 | Excellent | ? | C-P | Transverse | 6 | 1939 | Univ. Chicago No. H 1516 | |
7702 | 17 | E, 3.7 Ch., 14 | Good | Formalin | C-P | Transverse | 10 | Al. coch. | 1940 | Returned to B M Patten |
7851 | 13 | E., 4.3 Ch, 18 | Excellent | Formalin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1940 | Slightly injured |
8005 | 16/17 | E, 3 | Excellent | Bouin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1942 | Tubal |
8116 | 17 | E, 14 Ch.. 17 | Good | Formalin | p | Sagittal | 8 | Azan | 1953 | |
8962 | 15 | E, 1.55 | Good | ? | * | Sagittal | ? | ? | 1952 | Tubal Univ. Chicago No. H 810 |
Abbreviations
| ||||||||||
References
|
1987 - Stage 11 | Carnegie stage 11
Stage 12
Serial No. | Pairs of somites | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|
Thin- Serial Paired Size Embedding ness No. somites (mm) Grade Fixative medium Plane (|im) Stain Year Notes 209 ca.24 E.,3 Ch.,15 Poor Ale. Poor p Poor Formol Good Corros. acetic Good Formol Poor Formol Good Ale, formol Poor Formol P Cor. 50 ? Sag. 20 P Trans. 10 P Trans. 10 P Trans. 20 P Trans. 10 P Trans. 10 P Trans. 40 P Cor. 10 P Trans. 15 P Trans. 10 C-P Trans. 10 Al. coch. 1902 Al. coch. p 250 19? 384 P 486 21 E, 2 Ch., 10x9x9 E., 2.5 Ch.,13 E.,4 Ch., 22 E.,4.5 Ch., 20 E., 5.3 Ch., 19.5 H.&E. Al. coch. Al. coch. Al. coch, or. G. Al. coch. Al. coch. 1907 Macerated. Narrow yolk stalk 1911 1062 29 2197 •> 4245-7 ca.24 E.,3.5 1915 1918 1923 1923 Ch., 24 4479 E., 5.8 C h , 17 4736 26 E.,3.0 Good Formol Al. coch. 1924 4759 4784 5035 Ch.,20 7 E.,4.5 Ch., 15 23 E.,3 25-28 E.,3.8 Ch., 18 Good Formol Good p Good Formol H.&E. 5048 ca.25 E.,3.5 Good Formol C-P Trans. 10 Al. coch. 1925 Tubal. Injured Tubal Autopsy. Partly macerated Tubal. Ag added to slides 1-3 Tubal. Caudal neuropore closed Caudal end broken Typical for stage 12 Caudal defect 5056 5206 5300 5923 6097 6144 6488 6937 7724 7852 7999 8505a 25 E.,3 Good Formol Ch.,12 Trans. 10 Trans. 20 Trans. 20 C-P Trans. 10 Trans. 10 Trans. 10 Cor. 10 Sag. 8 Trans. 10 C-P Trans. 10 Al. Coch. Al. coch. Al. coch. Al. coch. Al. coch, eosin Al. coch. Al. coch. I. H., or. G. H.&E. H.&E. H.&E. H. Phlox. Azan 1925 1926 1926 1929 1930 1930 1932 1934 1940 1940 1942 b 23 8941 28 8942 25 8943 22 8944 25 8963 22 8964 23 9154 24 Exc Formol C-P Exc Zenker C-P Trans. 6 Cor. 5 Trans. 8 I.H. 1927 I.H. 1930 H.&E. 1934 I.H. 1936 I.H. 1928 I.H. 1928 I.H. & phlox Univ. Chicago No. H 1261 Univ. Chicago No. H 1382 Univ. Chicago No. H 1481 Univ. Chicago No. H 1514 Univ. Chicago. No. H 1093 Studied by Wen (1928) Univ. Chicago No. H 984. Studied by Wen (1928) p p 28 25 27 28 26 ca. 29 25 ca.28 24 E.,4 Poor p Ch., 51x31x30 7 P Exc. Formol P Trans. 10 Poor Formol E., 4.5 Ch,16.5 E.,4 Ch.,15 E,3.4 Ch., 12.5 E. 3.3 Ch., 11 E, 3.2 Ch,22 E.,3 C h , 12 E, 3.5 Ch.,18 E , 3.7 Ch,26 E, 3.2 C h , 15 Ch, 23.5 Ch,24 E, 4.9 Ch, 35 E, 38 Ch, 35 E. 3.9 Ch,, 20,4 E,4 Exc. Formal- C-P Sag. 8 Ch,,25 Zenker E, 3.8 Fair Formol C-P Trans. 10 Ch , 14 5 E,2.8 Pix>r Formol p Trans 8 Ch . 26 " E, 5 4 Exc Formal C-P Trans 8&6 Exc. Formol Good Lysol-Zenker C-P Good Formol C-P Poor Formol C-P Good Formol C-P Exc. Formol C-P Exc. Bouin Exc Formol C-P Trans. p Sag. p \ 1 CiA~J ( 1947 Twins Exc Zenker C-P Exc, Formol- C-P Zenker P Transitional to next stage Caudal neuropore widely open Macerated. Upper limb buds not visible No upper limb buds. Caudal neuropore closed 1924 Neural tube folded Al. coch. 1925 p 1924 1953
1987 - Stage 12 | Carnegie stage 12
Stage 13
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
1 | E.,4.5 Ch., 30x30 | Poor | Salicylic acid | P | Trans. | 10 | Hemat. | 1887 | Obtained by Mall while student |
19 | E., 5.5 Ch., 18x14 | Poor | p | ? | Trans. | 20 | Al. coch. | 1895 | |
87 | E., 4 Ch., 24x16x9 | Poor | p | P | Trans. | 20 | Al. coch. | 1896 | |
76 | E., 4.5 Ch., 22x20 | Poor | Alc. | P | Trans. | 20 | Al. coch. | 1897 | |
112 | E., 4 | Poor | p | P | Sag. | 10 | Al. coch. | p | |
116 | E., 5 | Poor | p | ? | Sag. | 10 | Al. coch. | 1898 | |
148 | E.,4.3 Ch., 17x14x10 | Poor | Alc. | P | Cor. | 10 | (Stain - Haematoxylin Eosin) | 1899 | Abnormal. Nasal discs fused |
186 | E.,3.5 Ch., 25x20x15 | Poor | Alc. | P | Trans. | 20 | Al. coch. | 1901 | |
239 | E., 3.0 | Poor | Formol | P | Trans. | 10 | (Stain - Haematoxylin Eosin) | 1903 | |
248 | E., 4.5 Ch., 30x23x15 | Poor | p | ? | Cor. | 50 | Al. coch. | 1904 | |
407 | E.,4 Ch., 14x13X7 | Poor | Formol | ? | Trans. | 40 | Al. coch. | 1907 | |
463 | E., 3.9 Ch., 17x12x7 | Good | Formol | P | Cor. | 10 | Al. coch. | 1910 | |
523 | E., 5 Ch., 25x25x15 | Fair | Formol | P | Trans. | p | Al. coch. | 1911 | |
588 | E., 4.0 Ch., 19x15x8 | Good | Corros. acetic | P | Cor. | 15 | (Stain - Haematoxylin Eosin) | 1912 | Advanced |
786 | E., 4.5 Ch., 19x10x10 | Poor | Alc. | P | Sag. | 15 | Al. coch. | 1913 | |
800 | E., 6.0 | Good | Corros. acetic | P | Trans. | 10 | H | 1913 | Curettage. Anencephaly |
808 | E.,4.0 | Poor | Corros. acetic | P | Trans. | 15 | Al. coch. | 1914 | Tubal. Incomplete |
826 | E., 5.0 Ch., 13x13x9 | Good | Formol | P | Trans. | 20 | Al. coch. | 1914 | Shrunken |
836 | E.,4.0 Ch., 22x18x11 | Exc. | Corros. acetic | P | Trans. | 15 | Al. coch. | 1914 | Less advanced |
963 | E.,4.0 Ch., 23x18x16 | Good | Formol | P | Cor. | 20 | Al. coch. | 1914 | |
1075 | E.,6.0 Ch., 46x32x20 | Exc. | Corros. acetic | P | Cor. | 20 | (Stain - Haematoxylin Eosin) or. G. | 1915 | Most advanced in group |
3956 | E., 4.0 | Poor | Formol | P | Trans. | 20 | Al. coch. | 1922 | Tubal. Incomplete |
4046 | E.,5 Ch., 22X20X20 | Poor | Formol | P | Trans. | 50 | Al. coch. | 1922 | |
5541 | E., 6.0 Ch., 35x30x20 | Good | Formol | P | Trans. | 10 | Al. coch., eosin | 1927 | |
5682 | E., 5.3 Ch., 29x25x13 | Poor | Formol | P | Cor. | 20 | Al. coch. | 1928 | |
5874 | E., 4.8 | Exc. | Bouin | P | Trans. | 10 | (Stain - Haematoxylin Eosin) | 1929 | Hysterotomy. Bromides only |
6032 | E., 5.8 Ch., 30x24x13 | Poor | Formol | P | P | ? | p | 1929 | Not good enough to cut |
6469 | E., 5.0 Ch., 25x18x18 | Poor | Formol | P | P | P | P | 1932 | Fragmented on cutting. Not saved |
6473 | E., 5.0 Ch, 30X30X15 | Exc. | Formol | C-P | Cor. | 6 | Al. coch. | 1932 | Less advanced. Ag added |
7433 | E., 5.2 Ch., 15x13x13 | Exc. | Formol | C-P | Cor. | 8 | (Stain - Haematoxylin Eosin) | 1937 | Tubal |
7618 | E, 48 Ch, 18x15x15 | Exc. | Bouin | C-P | Cor. | 10 | (Stain - Haematoxylin Eosin) | 1939 | Hystereaomy. Advanced. Ag added |
7669 | E, 5.0 Ch., 23x16x14 | Good | Formol | C-P | Cor. | 6 | (Stain - Haematoxylin Eosin) | 1939 | Hysterectomy. Least advanced in group, Ag added |
7889 | E, 4.2 | Exc. | Bouin | C-P | Cor. | 6 | (Stain - Haematoxylin Eosin) | 1941 | Hysterectomy |
8066 | E,53 C h , 20 x 18 x I8 | Exc. | Bouin | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1942 | Hysterectomy. Ag added to slide 2 |
8119 | E., 5.3 Ch., 32x28x6.5 | Exc. | Bouin | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1943 | Hysterectomy |
8147 | E., 5.2 Ch., 27x21x19 | Poor | Formol | ? | ? | p | p | 1943 | Tubal. Not cut |
8239 | E., 4.3 | Exc. | Bouin | C-P | Sag. | 8 | H. phlox. | 1944 | |
8372 | E., 5.6 | Exc. | Alc.& Bouin | P | Trans. | 10 | Azan | 1946 | |
8581 | E., 4.8 | Good | Kaiserling | C-P | Sag. | 8 | Azan | 1948 | Most-advanced third |
8967 | E., 5.7 | Exc. | Acetic Zenker | C-P | Trans. | 6 | (Stain - Haematoxylin Eosin) | 1931 | Head injured. Univ. Chicago No. H1426 |
9296 | E,4.5 | Exc. | C-P | Cor. | 8 | Azan | 1955 | ||
9297 | E., 4.5 | Exc. | C-P | Sag. | 8 | Azan | 1955 | ||
9697 | E., 5.5 | Bouin | 1956 | not cut |
Carnegie Collection Embryos - Stage 13 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes | |
1 | E.,4.5 Ch., 30x30 | Poor | Salicylic acid | P | Transverse | 10 | Hemat. | 1887 | Obtained by Mall while student | |
19 | E., 5.5 Ch., 18x14 | Poor | p | ? | Transverse | 20 | Al. coch. | 1895 | ||
98 | E., 4 Ch., 24x16x9 | Poor | p | P | Transverse | 20 | Al. coch. | 1896 | ||
76 | E., 4.5 Ch., 22x20 | Poor | Alc. | P | Transverse | 20 | Al. coch. | 1897 | ||
112 | E., 4 | Poor | p | P | Sagittal | 10 | Al. coch. | p | ||
116 | E., 5 | Poor | p | ? | Sagittal | 10 | Al. coch. | 1898 | ||
148 | E.,4.3 Ch., 17x14x10 | Poor | Alc. | P | Coronal | 10 | (Stain - Haematoxylin Eosin) | 1899 | Abnormal. Nasal discs fused | |
186 | E.,3.5 Ch., 25x20x15 | Poor | Alc. | P | Transverse | 20 | Al. coch. | 1901 | ||
239 | E., 3.0 | Poor | Formalin | P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1903 | ||
248 | E., 4.5 Ch., 30x23x15 | Poor | p | ? | Coronal | 50 | Al. coch. | 1904 | ||
407 | E.,4 Ch., 14x13X7 | Poor | Formalin | ? | Transverse | 40 | Al. coch. | 1907 | ||
463 | E., 3.9 Ch., 17x12x7 | Good | Formalin | P | Coronal | 10 | Al. coch. | 1910 | ||
523 | E., 5 Ch., 25x25x15 | Fair | Formalin | P | Transverse | p | Al. coch. | 1911 | ||
588 | E., 4.0 Ch., 19x15x8 | Good | Corros. acetic | P | Coronal | 15 | (Stain - Haematoxylin Eosin) | 1912 | Advanced | |
786 | E., 4.5 Ch., 19x10x10 | Poor | Alc. | P | Sagittal | 15 | Al. coch. | 1913 | ||
800 | E., 6.0 | Good | Corros. acetic | P | Transverse | 10 | H | 1913 | Curettage. Anencephaly | |
808 | E.,4.0 | Poor | Corros. acetic | P | Transverse | 15 | Al. coch. | 1914 | Tubal Incomplete | |
826 | E., 5.0 Ch., 13x13x9 | Good | Formalin | P | Transverse | 20 | Al. coch. | 1914 | Shrunken | |
836 | E.,4.0 Ch., 22x18x11 | Exc. | Corros. acetic | P | Transverse | 15 | Al. coch. | 1914 | Less advanced | |
963 | E.,4.0 Ch., 23x18x16 | Good | Formalin | P | Coronal | 20 | Al. coch. | 1914 | ||
1075 | E.,6.0 Ch., 46x32x20 | Exc. | Corros. acetic | P | Coronal | 20 | (Stain - Haematoxylin Eosin) or. G. | 1915 | Most advanced in group | |
3956 | E., 4.0 | Poor | Formalin | P | Transverse | 20 | Al. coch. | 1922 | Tubal Incomplete | |
4046 | E.,5 Ch., 22x20x20 | Poor | Formalin | P | Transverse | 50 | Al. coch. | 1922 | ||
5541 | E., 6.0 Ch., 35x30x20 | Good | Formalin | P | Transverse | 10 | Al. coch., eosin | 1927 | ||
5682 | E., 5.3 Ch., 29x25x13 | Poor | Formalin | P | Coronal | 20 | Al. coch. | 1928 | ||
5874 | E., 4.8 | Exc. | Bouin | P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1929 | Hysterotomy. Bromides only | |
6032 | E., 5.8 Ch., 30x24x13 | Poor | Formalin | P | P | ? | p | 1929 | Not good enough to cut | |
6469 | E., 5.0 Ch., 25x18x18 | Poor | Formalin | P | P | P | P | 1932 | Fragmented on cutting. Not saved | |
6473 | E., 5.0 Ch, 30x30x15 | Exc. | Formalin | C-P | Coronal | 6 | Al. coch. | 1932 | Less advanced. Ag added | |
7433 | E., 5.2 Ch., 15x13x13 | Exc. | Formalin | C-P | Coronal | 8 | (Stain - Haematoxylin Eosin) | 1937 | Tubal | |
7618 | E, 48 Ch, 18x15x15 | Exc. | Bouin | C-P | Coronal | 10 | (Stain - Haematoxylin Eosin) | 1939 | Hystereaomy. Advanced. Ag added | |
7669 | E, 5.0 Ch., 23x16x14 | Good | Formalin | C-P | Coronal | 6 | (Stain - Haematoxylin Eosin) | 1939 | Hysterectomy. Least advanced in group, Ag added | |
7889 | E, 4.2 | Exc. | Bouin | C-P | Coronal | 6 | (Stain - Haematoxylin Eosin) | 1941 | Hysterectomy | |
8066 | E,53 Ch , 20x18xI8 | Exc. | Bouin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1942 | Hysterectomy. Ag added to slide 2 | |
8119 | E., 5.3 Ch., 32x28x6.5 | Exc. | Bouin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1943 | Hysterectomy | |
8147 | E., 5.2 Ch., 27x21x19 | Poor | Formalin | ? | ? | p | p | 1943 | Tubal Not cut | |
8239 | E., 4.3 | Exc. | Bouin | C-P | Sagittal | 8 | H. phlox. | 1944 | ||
8372 | E., 5.6 | Exc. | Alc.& Bouin | P | Transverse | 10 | Azan | 1946 | ||
8581 | E., 4.8 | Good | Kaiserling | C-P | Sagittal | 8 | Azan | 1948 | Most-advanced third | |
8967 | E., 5.7 | Exc. | Acetic Zenker | C-P | Transverse | 6 | (Stain - Haematoxylin Eosin) | 1931 | Head injured. Univ. Chicago No. H1426 | |
9296 | E,4.5 | Exc. | C-P | Coronal | 8 | Azan | 1955 | |||
9297 | E., 4.5 | Exc. | C-P | Sagittal | 8 | Azan | 1955 | |||
9697 | E., 5.5 | Bouin | 1956 | not cut | ||||||
Abbreviations
|
Stage 14
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
4 | E.,7 | Poor | p | P | Trans. | 10 | Al. coch. | 1892 | |
18 | E.,7 Ch., 18x18 | Poor | p | P | Trans. | 20 | Al. coch. | 1895 | |
80 | E., 5.0 Ch., 24x18x8 | Good | Alc. | P | Trans. | 20 | Al. coch. | 1897 | |
187 | E.,7 Ch., 35x30x25 | Poor | ? | P | Sag. | 20 | Al. coch. | 1902 | |
208 | E.,7 Ch., 22x11Xx1 | Poor | ? | P | Sag. | 20 | Al. coch. | 1902 | |
245 | E.,6 Ch., 13x12x10 | Poor | Formol, Zenker | ? | Trans. | 5 | (Stain - Haematoxylin Eosin) | 1904 | |
372 | E.,7 | Fair | p | P | Trans. | 10 | H.-Congo red | 1902 | |
380 | E,6 Ch., 20x20x14 | Poor | p | P | Sag. | 20 | (Stain - Haematoxylin Eosin) | 1906 | |
387 | E.,7 Ch., 45x40x50 | Good | Formol | P | Trans. | 20 | (Stain - Haematoxylin Eosin) | 1907 | |
442 | E.,6 Ch., 25x20 | Poor | Formol | P | Cor.? | 50 | Al. coch. | 1908 | |
552 | E.,6 Ch, 40x28Xx8 | Poor | p | P | Sag. | 40 | Al. coch. | 1911 | Possible anencephaly |
560 | E., 7.0 Ch, 24x24 | Poor | Formol | P | Cor. | 40 | Al. coch. | 1912 | |
676 | E., 6.0 Ch, 35x20x17 | Good | Carnoy | P | Tr.-Cor. | 20 | (Stain - Haematoxylin Eosin) | 1913 | Possible spina bifida |
873 | E,6.0 Ch., 35x28x16 | Poor | Formol | P | Sag. | 20 | Al. coch. | 1914 | |
988 | E,6.0 Ch., 38x30x23 | Good | Formol-corros. acetic | P | Trans. | 20 | Al. coch. | 1914 | |
1380 | E , 5.7 Ch, 36x24x24 | Exc. | Formol | P | Cor. | 20 | Al. coch. | 1916 | |
1620 | E, 6.6 Ch, 35x30x8 | Good | Formol | P | Sag. | 20 | Al. coch. | 1916 | |
?? | E, 6.68 | Fair | ? | ? | Trans. | 6 | Al. coch., or. G | 1919 | |
2841 | E , sy Ch. 35x21 | Good | Alc. | P | Trans. | 20 | (Stain - Haematoxylin Eosin) or.G | 1920 | |
3360 | E.6.0 | Good | Formol | C | Trans. | 20 | (Stain - Haematoxylin Eosin) or.G | 1920 | In mvomatous uterus. Advanced. |
3805 | E., 5.9 | Exc. | Bouin | P | Trans. | 15 | (Stain - Haematoxylin Eosin) | 1921 | Evans embryo No. 168. Serial bromides only |
3960 | E., 5.5 | Good | Formol | C-P | Cor. | 20 | Al. coch. | 1922 | Blood vessels naturally injected |
4154 | E, 6.8 Ch., 33x31x20 | Poor | Alc. | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1923 | |
4245-6 | E., 7.0 | Good | Formol | P | Trans. | 15 | Al. coch. | 1923 | Univ. Pennsylvania No. 40. Ag added |
4629 | E., 6.5 Ch.,32x23 | Good | Formol | C-P | Sag. | 10 | (Stain - Haematoxylin Eosin) | 1924 | |
4672 | E,8.2 Ch., 40X34X25 | Good | Formol | P | Trans. | 20 | Al. coch. | 1924 | Advanced |
4805 | E., 7.3 Ch., 15X8X9 | Good | Formol | C-P | Trans. | 10 | (Stain - Haematoxylin Eosin) | 1924 | Tubal |
5437 | E., 7.0 | Good | Formol | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1927 | Advanced |
5654 | E., 5.0 Ch., 30X23X17 | Good | Formol | P | Trans. | 10 | Al. coch., eosin | 1928 | Less advanced |
5787 | E., 6.8 Ch., 32x30x23 | Good | Formol | P | Sag. | 10 | Al. coch., eosin | 1928 | |
6428 | E., 7.0 Ch., 30X28X25 | Good | Formol | C-P | Cor. | 6, 10 | Al. coch. | 1931 | Advanced |
6500 | E, 4.9* | Good | Souza? | C-P | Sag. | 10 | Al. coch. | 1931 | E. Leitz, Berlin |
6502 | E., 6.7* | Exc. | Souza? | C-P | Trans. | 5, 10 | (Stain - Haematoxylin Eosin) | 1931 | E. Leitz, Berlin. Ag added to slides 1-25 |
6503 | E., 6.3* | Exc. | Souza? | C-P | Cor. | 10 | Al. coch. | 1931 | E. Leitz, Berlin |
6739 | E.,8 | Poor | Formol | C-P | Sag. | 20 | (Stain - Haematoxylin Eosin) | 1933 | |
6830 | E,5.5 Ch., 47X23X15 | Exc. | Formol | C-P | Cor. | 8 | (Stain - Haematoxylin Eosin) | 1933 | |
6848 | E., 7.8 | Good | Formol | C-P | Cor. | 10 | (Stain - Haematoxylin Eosin) | 1934 | Tubal |
7324 | E, 6.6 Ch., 17x13x10 | Good | Formol | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1936 | Low implantation |
7333 | E, 6.3 | Good | Formol | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1936 | |
7394 | E, 7.2 Ch., 45X20X20 | Exc. | Formol | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1937 | |
7400 | E, 6.3 Ch., 35X25x20 | Good | Formol | C-P | Cor. | 10 | (Stain - Haematoxylin Eosin) | 1937 | |
7522 | E., 7.7 Ch., 33x16x16 | Good | Formol | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1938 | Natural blood injection |
7598 | E., 7.0 Ch., 30x30x25 | Poor | Alc. | C-P | Trans. | 10 | (Stain - Haematoxylin Eosin) | 1938 | Macerated |
7667 | E., 5 Ch., 16x14x12 | Fair | Formol | P | Trans. | 8 | (Stain - Haematoxylin Eosin), phlox. | 1939 | |
7829 | E., 7.0 | Exc. | Bouin | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1940 | Advanced |
7870 | E,7.2 Ch., 25x20x13 | Exc. | Bouin | C-P | Trans. | 8 | (Stain - Haematoxylin Eosin) | 1941 | On borderline of next stage. Ag added |
8141 | E,7.3 Ch.,33x28 | Exc. | C-P | Cor. | 8 | (Stain - Haematoxylin Eosin) | 1943 | Shrinkage cracks in brain | |
8306 | E.5.3 Ch., 27 | Exc. | Bouin | C-P | Trans. | 10, 20 | (Stain - Haematoxylin Eosin), phlox. | 1945 | |
8308 | E, 5.85 Ch., 27x18x18 | Exc. | Formol & Bouin | C-P | Sag. | 8 | Azan | 1945 | |
8314 | E,8 Ch.,23x22 | Exc. | Formol | C-P | Trans. | 8 | Azan | 1945 | |
8357 | E., 6.5 | Good | Formol | C-P | Sag. | 8 | Azan | 1946 | |
8552 | E,6.5 | Exc. | Alc. & Bouin | C-P | Trans. | 8 | Azan | 1947 | |
8999 | E,6 Ch.,16x15 | Exc. | Alc. & Bouin | C-P | Sag. | 8 | Azan | 1952 | |
9695 | E,8.5 | ? | 1955 | Not cut |
Carnegie Collection Embryos - Stage 14 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes | |
4 | E.,7 | Poor | p | P | Transverse | 10 | Al. coch. | 1892 | ||
18 | E.,7 Ch., 18x18 | Poor | p | P | Transverse | 20 | Al. coch. | 1895 | ||
80 | E., 5.0 Ch., 24x18x8 | Good | Alc. | P | Transverse | 20 | Al. coch. | 1897 | ||
187 | E.,7 Ch., 35x30x25 | Poor | ? | P | Sagittal | 20 | Al. coch. | 1902 | ||
1208 | E.,7 Ch., 22x11Xx1 | Poor | ? | P | Sagittal | 20 | Al. coch. | 1902 | ||
245 | E.,6 Ch., 13x12x10 | Poor | Formol, Zenker | ? | Transverse | 5 | (Stain - Haematoxylin Eosin) | 1904 | ||
372 | E.,7 | Fair | p | P | Transverse | 10 | H.-Congo red | 1902 | ||
380 | E,6 Ch., 20x20x14 | Poor | p | P | Sagittal | 20 | (Stain - Haematoxylin Eosin) | 1906 | ||
387 | E.,7 Ch., 45x40x50 | Good | Formalin | P | Transverse | 20 | (Stain - Haematoxylin Eosin) | 1907 | ||
442 | E.,6 Ch., 25x20 | Poor | Formalin | P | Coronal? | 50 | Al. coch. | 1908 | ||
552 | E.,6 Ch, 40x28Xx8 | Poor | p | P | Sagittal | 40 | Al. coch. | 1911 | Possible anencephaly | |
560 | E., 7.0 Ch, 24x24 | Poor | Formalin | P | Coronal | 40 | Al. coch. | 1912 | ||
676 | E., 6.0 Ch, 35x20x17 | Good | Carnoy | P | Tr.-Coronal | 20 | (Stain - Haematoxylin Eosin) | 1913 | Possible spina bifida | |
873 | E,6.0 Ch., 35x28x16 | Poor | Formalin | P | Sagittal | 20 | Al. coch. | 1914 | ||
988 | E,6.0 Ch., 38x30x23 | Good | Formol-corros. acetic | P | Transverse | 20 | Al. coch. | 1914 | ||
1380 | E , 5.7 Ch, 36x24x24 | Exc. | Formalin | P | Coronal | 20 | Al. coch. | 1916 | ||
1620 | E, 6.6 Ch, 35x30x8 | Good | Formalin | P | Sagittal | 20 | Al. coch. | 1916 | ||
?? | E, 6.68 | Fair | ? | ? | Transverse | 6 | Al. coch., or. G | 1919 | ||
2841 | E , sy Ch. 35x21 | Good | Alc. | P | Transverse | 20 | (Stain - Haematoxylin Eosin) or.G | 1920 | ||
3360 | E.6.0 | Good | Formalin | C | Transverse | 20 | (Stain - Haematoxylin Eosin) or.G | 1920 | In myomatous uterus. Advanced. | |
3805 | E., 5.9 | Exc. | Bouin | P | Transverse | 15 | (Stain - Haematoxylin Eosin) | 1921 | Evans embryo No. 168. Serial bromides only | |
3960 | E., 5.5 | Good | Formalin | C-P | Coronal | 20 | Al. coch. | 1922 | Blood vessels naturally injected | |
4154 | E, 6.8 Ch., 33x31x20 | Poor | Alc. | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1923 | ||
4245-6 | E., 7.0 | Good | Formalin | P | Transverse | 15 | Al. coch. | 1923 | Univ. Pennsylvania No. 40. Ag added | |
4692 | E., 6.5 Ch., 32x23 | Good | Formalin | C-P | Sagittal | 10 | (Stain - Haematoxylin Eosin) | 1924 | ||
4672 | E,8.2 Ch., 40X34X25 | Good | Formalin | P | Transverse | 20 | Al. coch. | 1924 | Advanced | |
4805 | E., 7.3 Ch., 15X8X9 | Good | Formalin | C-P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1924 | Tubal | |
5437 | E., 7.0 | Good | Formalin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1927 | Advanced | |
5654 | E., 5.0 Ch., 30x23x17 | Good | Formalin | P | Transverse | 10 | Al. coch., eosin | 1928 | Less advanced | |
5787 | E., 6.8 Ch., 32x30x23 | Good | Formalin | P | Sagittal | 10 | Al. coch., eosin | 1928 | ||
6428 | E., 7.0 Ch., 30X28X25 | Good | Formalin | C-P | Coronal | 6, 10 | Al. coch. | 1931 | Advanced | |
6500 | E, 4.9* | Good | Souza? | C-P | Sagittal | 10 | Al. coch. | 1931 | E. Leitz, Berlin | |
6502 | E., 6.7* | Exc. | Souza? | C-P | Transverse | 5, 10 | (Stain - Haematoxylin Eosin) | 1931 | E. Leitz, Berlin. Ag added to slides 1-25 | |
6503 | E., 6.3* | Exc. | Souza? | C-P | Coronal | 10 | Al. coch. | 1931 | E. Leitz, Berlin | |
6739 | E.,8 | Poor | Formalin | C-P | Sagittal | 20 | (Stain - Haematoxylin Eosin) | 1933 | ||
6830 | E,5.5 Ch., 47x23x15 | Exc. | Formalin | C-P | Coronal | 8 | (Stain - Haematoxylin Eosin) | 1933 | ||
6848 | E., 7.8 | Good | Formalin | C-P | Coronal | 10 | (Stain - Haematoxylin Eosin) | 1934 | Tubal | |
7324 | E, 6.6 Ch., 17x13x10 | Good | Formalin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1936 | Low implantation | |
7333 | E, 6.3 | Good | Formalin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1936 | ||
7394 | E, 7.2 Ch., 45x20x20 | Exc. | Formalin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1937 | ||
7400 | E, 6.3 Ch., 35x25x20 | Good | Formalin | C-P | Coronal | 10 | (Stain - Haematoxylin Eosin) | 1937 | ||
7522 | E., 7.7 Ch., 33x16x16 | Good | Formalin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1938 | Natural blood injection | |
7598 | E., 7.0 Ch., 30x30x25 | Poor | Alc. | C-P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1938 | Macerated | |
7667 | E., 5 Ch., 16x14x12 | Fair | Formalin | P | Transverse | 8 | (Stain - Haematoxylin Eosin), phlox. | 1939 | ||
7829 | E., 7.0 | Exc. | Bouin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1940 | Advanced | |
7870 | E,7.2 Ch., 25x20x13 | Exc. | Bouin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1941 | On borderline of next stage. Ag added | |
8141 | E,7.3 Ch.,33x28 | Exc. | C-P | Coronal | 8 | (Stain - Haematoxylin Eosin) | 1943 | Shrinkage cracks in brain | ||
8306 | E.5.3 Ch., 27 | Exc. | Bouin | C-P | Transverse | 10, 20 | (Stain - Haematoxylin Eosin), phlox. | 1945 | ||
8308 | E, 5.85 Ch., 27x18x18 | Exc. | Formol & Bouin | C-P | Sagittal | 8 | Azan | 1945 | ||
8314 | E,8 Ch.,23x22 | Exc. | Formol | C-P | Transverse | 8 | Azan | 1945 | ||
8357 | E., 6.5 | Good | Formol | C-P | Sagittal | 8 | Azan | 1946 | ||
8552 | E,6.5 | Exc. | Alc. & Bouin | C-P | Transverse | 8 | Azan | 1947 | ||
8999 | E,6 Ch.,16x15 | Exc. | Alc. & Bouin | C-P | Sagittal | 8 | Azan | 1952 | ||
9695 | E,8.5 | ? | 1955 | Not cut | ||||||
Abbreviations
|
Stage 15
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
2 | E., 7.0 Ch., 25X25X25 | Good | Alc. | P | Trans. | 15 | Al. carm. | 1888 | Least-advanced third |
88 | E.,8 Ch., 30x28x15 | Poor | Alc. | P | Cor. | P | Al. coch. | 1897 | |
113 | E.,8 241 E,6.0 | Poor | P | p | Sag. | 10 | Borax carmine | ? | |
241 | E,6.0 | Good | Formol | P | Trans. | 10 | H. & Congo red | 1904 | |
371 | E,6.6 | Good | Formol | P | Sag. | 10 | Al. coch. | 1913 | Shrunken and cracked |
389 | E., 9 | Poor | p | p | Sag. | 20 | (Stain - Haematoxylin Eosin) | 1907 | Tubal |
721 | E., 9.0 Ch., 30x20x10 | Exc. | Zenker formol | P | Trans. | 15 | (Stain - Haematoxylin Eosin) | 1913 | Median in group |
810 | E., 7.0 Ch, 30x25x15 | Good | Alc. | P | Sag. | 20 | Al. coch | 1913 | |
855 | E.,7.5 | Poor | Formol | P | Trans. | 100 | Al. coch. | 1914 | Pathological between limbs |
1006 | E,9.0 Ch., 37x26x22 | Poor | Formol | P | Cor. | 20 | (Stain - Haematoxylin Eosin) or. G. | 1914 | Operative. Most-advanced third |
1091 | E,7.2 Ch., 28x26x20 | Poor | P | Cor. | 20 | Al. coch. | 1915 | Macerated | |
1354 | E,7.8 Ch, 35x30x25 | Good | Formol | P | Sag. | 20 | Al. coch. | 1916 | Least-advanced third |
1767 | E , 11.0 Ch, 41 X23X5 | Good | Formol | P | Sag. | 40 | (Stain - Haematoxylin Eosin) or. G. | 1917 | Most-advanced third |
2743 | E., 7.2 Ch., 19xl8x 14 | Poor | Formol | P | Trans. | 20 | Al. coch. | 1919 | Macerated. Least-advanced third |
3216 | E, 6.5 Ch, 30x30x5 | Good | Formol | P | Trans. | 20 | Al. coch. | 1920 | Hysterectomy. Least-advanced third |
3385 | E,83 Ch., 25x20x16 | Exc. | Corros. acetic | P | Trans. | 20 | (Stain - Haematoxylin Eosin) or. G. | 1921 | Some sections lost. Most-advanced third. Ag added |
3441 | E,8.0 Ch., 25x24x20 | Good | Formol | P | Sag. | 10 | Al. coch. | 1921 | |
3512 | E,8,5 Ch., 33x28x25 | Good | Formol | P | Trans. | 10 | Al. coch. | 1921 | |
3952 | E,6,7 Ch., 30x25x15 | Good | Formol | P | Cor. | 15 | Al. coch. | 1922 | Median in group |
4602 | E,9.3 Ch,, 33x30x26 | Good | Formol | P | Sag. | 15 | Al. coch. | 1924 | Medical abortion |
4782 | E,9.0 Ch., I4xl3x 11 | Poor | Formol | P | Cor. | 20 | Al. coch. | 1924 | |
5772 | E, 8 | Poor | ? | P | Cor. | 15 | Al. coch. eosin | 1928 | |
5?92 | E, 3 | Good | Corros. acetic | C-P | Cor. | 10 | Al. coch. phlox | 1929 | Transitional to next stage |
6223 | E ? | Poor | Alc. | C-P | Sag. | 8 | Or. G. | 1930 | Fragmented sections. Not saved |
65?? | |||||||||
6??? | |||||||||
6508 | |||||||||
6595 | |||||||||
???? |
Carnegie Collection Embryos - Stage 15 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes | |
2 | E., 7.0 Ch., 25x25x25 | Good | Alc. | P | Transverse | 15 | Al. carm. | 1888 | Least-advanced third | |
88 | E.,8 Ch., 30x28x15 | Poor | Alc. | P | Coronal | P | Al. coch. | 1897 | ||
113 | E.,8 241 E,6.0 | Poor | P | p | Sagittal | 10 | Borax carmine | ? | ||
241 | E,6.0 | Good | Formalin | P | Transverse | 10 | H. & Congo red | 1904 | ||
371 | E,6.6 | Good | Formalin | P | Sagittal | 10 | Al. coch. | 1913 | Shrunken and cracked | |
389 | E., 9 | Poor | p | p | Sagittal | 20 | (Stain - Haematoxylin Eosin) | 1907 | Tubal | |
721 | E., 9.0 Ch., 30x20x10 | Exc. | Zenker formol | P | Transverse | 15 | (Stain - Haematoxylin Eosin) | 1913 | Median in group | |
810 | E., 7.0 Ch, 30x25x15 | Good | Alc. | P | Sagittal | 20 | Al. coch | 1913 | ||
855 | E.,7.5 | Poor | Formalin | P | Transverse | 100 | Al. coch. | 1914 | Pathological between limbs | |
1006 | E,9.0 Ch., 37x26x22 | Poor | Formalin | P | Coronal | 20 | (Stain - Haematoxylin Eosin) or. G. | 1914 | Operative. Most-advanced third | |
1091 | E,7.2 Ch., 28x26x20 | Poor | P | P | Coronal | 20 | Al. coch. | 1915 | Macerated | |
1354 | E,7.8 Ch, 35x30x25 | Good | Formalin | P | Sagittal | 20 | Al. coch. | 1916 | Least-advanced third | |
1767 | E , 11.0 Ch, 41x23x5 | Good | Formalin | P | Sagittal | 40 | (Stain - Haematoxylin Eosin) or. G. | 1917 | Most-advanced third | |
2743 | E., 7.2 Ch., 19xl8x14 | Poor | Formalin | P | Transverse | 20 | Al. coch. | 1919 | Macerated. Least-advanced third | |
3216 | E, 6.5 Ch, 30x30x5 | Good | Formalin | P | Transverse | 20 | Al. coch. | 1920 | Hysterectomy. Least-advanced third | |
3385 | E,83 Ch., 25x20x16 | Exc. | Corros. acetic | P | Trans. | 20 | (Stain - Haematoxylin Eosin) or. G. | 1921 | Some sections lost. Most-advanced third. Ag added | |
3441 | E,8.0 Ch., 25x24x20 | Good | Formalin | P | Sag. | 10 | Al. coch. | 1921 | ||
3512 | E,8,5 Ch., 33x28x25 | Good | Formalin | P | Trans. | 10 | Al. coch. | 1921 | ||
3952 | E,6,7 Ch., 30x25x15 | Good | Formalin | P | Cor. | 15 | Al. coch. | 1922 | Median in group | |
4602 | E,9.3 Ch,, 33x30x26 | Good | Formalin | P | Sag. | 15 | Al. coch. | 1924 | Medical abortion | |
4782 | E,9.0 Ch., I4xl3x11 | Poor | Formalin | P | Cor. | 20 | Al. coch. | 1924 | ||
5772 | E, 8 | Poor | ? | P | Cor. | 15 | Al. coch. eosin | 1928 | ||
Template:CE5?92 | E, 3 | Good | Corros. acetic | C-P | Cor. | 10 | Al. coch. phlox | 1929 | Transitional to next stage | |
6223 | E ? | Poor | Alc. | C-P | Sag. | 8 | Or. G. | 1930 | Fragmented sections. Not saved | |
6504 | ||||||||||
6506 | ||||||||||
6508 | ||||||||||
6595 | ||||||||||
???? | ||||||||||
Abbreviations
|
1987 - Stage 15 | Carnegie stage 15
Stage 16
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
163 | E., 9.0 Ch., 35X35X20 | Good | Formol | P | |||||
221 | E., 7.5 Ch., 40X33X33 | Poor | Formol | P | |||||
383 | E., 7.0 Ch., 15X15X15 | Poor | Formol | P | |||||
397 | E., 8.0 Ch., 15X15X15 | Poor | Formol | P | |||||
422 | E., 9.0 Ch., 30X30X30 | Poor | Alc. | P | |||||
559 | E., 8.6 Ch., 20X15X12 | Good | Formol | P | |||||
589 | E., 11 Ch., 30X13X13 | Poor | p | P | |||||
617 | E., 7.0 Ch., 18X14x12 | Good | Formol | P | |||||
636 | E., 10 Ch.,28x28X22 | Poor | Formol | P | |||||
651f | E., 7 Ch., 25X20X15 | Poor | p | p | |||||
675 | E., 10 Ch., 50X30X25 | Poor | Formol | P | |||||
792 | E., 8.0 Ch., 40X30X30 | Good | Formol | P | |||||
887 | E, 9.0 Ch., 31X28x17 | Good | Formol | P | |||||
1121 | E., 11.8 | Good | Corros. acetic | P | |||||
1197 | E., 10.0 Ch., 23X19X15 | Good | Formol | C | |||||
1544 | E., 7.2 | Good | Zenker | P | |||||
1836 | E., 11.0 | Good | Formol | P | |||||
4677 | E., 9.5 Ch., 48x36x30 | Good | Formol | P | |||||
5515 | E., 12.0 Ch., 47X37X25 | Good | Formol | C-P | |||||
6054 | E., 7,0 Ch., 21X17X12 | Good | Formol | C-P | |||||
6507 | E., 9.0* | Exc. | Corros. acetic | C-P | |||||
6509 | E. 8.1* | Exc. | Corros. acetic | C-P | |||||
6510 | E., 10.1* | Exc. | Corros. acetic | C-P | |||||
6511 | E, 8.1* | Good | Corros. acetic | C-P | |||||
6512 | E., 7.0* | Exc. | Corros. acetic | C-P | |||||
6513 | E., 7.2* | Good | Corros. acetic | C-P | |||||
6514 | E., 9 0* | Poor | Corros. acetic | C-P | |||||
6516 | E., 10 5* | Good | Corros acetic | C-P | |||||
6517 | E., 10.5* | Exc. | Corros. acetic | C-P | |||||
6686 | E., 11.0 Ch., l7x 17XP | Poor | Formol | ||||||
6750 | E., 10.0 | Good | Formol | ||||||
6909 | E., 11.0 | Good | Bouin | ||||||
6931 | E., 8.8 Ch., 3""x 33x16 | Good | Formol | ||||||
6950 | E.. 9 0 Ch., 3lx20x 18 | Good | Formol | ||||||
7?15 | E., 9.7 | Exc | Bouin | C-P |
Carnegie Collection Embryos - Stage 18 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Semi. ducts | P.-M. duct (mm) | Year | Notes |
109 | E., 12.0* Ch.,30 | Poor | Alc. | P | Transverse | 20 | Al. coch. | 1 | 0.4 | 1897 | Tubal Least—advanced third |
144 | E., 16.0* Ch, 40x30x30 | Good | Formalin | P | Sagittal | 40 | Al. eoch. | 3 | 0.85 | 1899 | Most—advanced third |
175 | E., 13.0 Ch, 30x25x25 | Poor | Alc. | P | Transverse | 20 | Al. coch. | 2 | 0.6 | 1900 | Tubal Partly macerated |
296 | E., 17.0 | Poor | Ale. | P | Coronal | 20 | Various | 3 | 0.85 | 1905 | Most—advanced third |
317 | E., 16.0 | Good | Formalin | P | Coronal | 20 | (Stain - Haematoxylin Eosin) or. G. | 2 | 0.7 | 1905 | Middle third |
351 | E.,14.0* | Good | Formalin | P | Coronal | 250 | Slightly carmine— | 2 | 038 | 1904 | Injected (Berlin blue) |
406 | E., 16.0 Ch., 40x40x40 | Good | Formalin | P | Sagittal | 20 | (Stain - Haematoxylin Eosin) | 3 | 0.7 | 1907 | Operative. Most—advanced third |
423 | E., 15.2 | Good | Formol—Zenker | P | Transverse | 50 | Carmine | 3 | 0.85 | 1904 | |
424 | E., 172 | Good | Formalin | P | Transverse | 50 | Carmine | 3 | 10 | 1904 | Double infection. Advanced |
492 | E, 16.8 Ch, 40 x 40 | Exc. | Zenker | P | Coronal | 40 | Al. coch. v | 3 | 0.7 | 1911 | Injected (India ink) |
511 | E., 160* Ch., 3?* 32x32 | Good | Ale. | P | Sagittal | 40 | Al. coch. | 3 | 1.1 | 1911 | Head injured. Most advanced in group |
670 | E, 12.5 | Poor | Ale. | P | Sagittal | 50 | (Stain - Haematoxylin Eosin) | 3 | 10 | 1913 | Tubal Advanced |
719 | E, 15.0 Ch, 50x50x50 | Good | Formalin | P | Trans | 40 | Al. coch. | 2 | 0.6 | 1913 | Median in group |
733 | E., Ch., 4Sx40x2S | ISO Poor | Formalin | P | Sagittal | 50 | Al. coch. | 2 | 0.6 | 1913 | Median in group |
841 | E. 15.0 Ch., 18 x 16x9 | Good | Formalin | P | Coronal & Trans, 20 | 10 | (Stain - Haematoxylin Eosin), carmine | 2 | 0.32 | 1914 | Operative. Head cut separately |
899 | E, 160* Ch. 50 x 18 x IS | Good | Bouin | P | Sagittal | S0 | Al. coch. | 3 | 0,65 | 1914 | Tubal Head injured |
991 | E. l?.0 | Good | Formalin | P | Sag | so | R, V, Gieson | 3 | 0.9 | 1914 | Advanced |
1909 | E., 14.6 | Good | Formalin | P | Coronal | 20 | Al. coch,or. G. | 1 | 0.3 | 1917 | Less advanced |
2673 | E.,15.5 | Good | Formalin | P | Transverse | 40 | Al. coch. | 2 | 0.52 | 1919 | Median in group |
4430 | E., 14.0 Ch, 51 x40x21 | Exc. | Corros. acetic | P | Transverse | 15 | Al. coch,or. G. | 3 | 0.9 | 1923 | Most—advanced third |
5542B | E., 16.0 Ch, 37x32x25 | Good | Formalin | P | Transverse | 40 | Al. coch. | 2 | 0.7 | 1927 | Other twin abnormal |
5747 | E, 15.2 Ch, 32x27x25 | Poor | Alc.—formol | P | Sagittal | 25 | Al. coch. | 2 | 0.25 | 1928 | Least—advanced or middle third |
5935A | E, 13.5 Ch, 40x30x30 | Good | Formalin | P | Coronal | 40 | Al. coch. | 1 | 0.38 | 1929 | Other twin stunted |
6522 | E, 13.2* | Good | Corros. acetic | C—P | Coronal | 10 | Al. coch. | 3 | 0.8 | 7 | Middle or most—advanced third |
6524 | E, 11.7* | Exc. | Corros. acetic | C—P | Transverse | 10 | Al. coch. | 1 | 0.4 | ? | Least—advanced third |
6525 | E, 13.8* | Exc. | Corros. acetic | C—P | Sagittal | 8 | Al. coch. | 2 | 0.42 | ? | Weak staining |
6527 | E, 14.4* | Exc. | Corros. acetic | C—P | Transverse | 15 | Al. coch. | 2 | 0.67 | ? | Mechanical damage |
6528 | E, 13.4* | Exc. | Corros. acetic | C—P | Coronal | 8 | Al. coch. | 1 | 0.33 | ? | Least—advanced third |
6529 | E, 15.6* | Good | Corros. acetic | C—P | Coronal | 10 | Al. coch. | 2 | 0.4 .5 | Middle third | |
6533 | E, 12.5* | Good | Corros. acetic | C—P | Sagittal | 6, 8, 10 | Al. coch. | 2 | 0.45 | ? | Middle third |
6551 | E, 18.0 | Poor | Formalin | p | Coronal | 40 | (Stain - Haematoxylin Eosin) | 3 | 0.8 | 1932 | Tubal |
7707 | E, 14.5 Ch ,37x32 | Exc. | Bouin | C—P | Transverse | 10 | (Stain - Haematoxylin Eosin), phlox. | 2 | 0.54 | 1939 | Operative. Middle third |
8097 | E, 15.5 Ch, 37x25x21 | Good | Formalin | C—P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1 | 0.19 | 1942 | Least advanced in group |
8172 | E, 16.5 | Exc. | Bouin | C—P | Transverse | 20 | (Stain - Haematoxylin Eosin) | 3 | 0.58 | 1943 | Operative. Very advanced |
8235 | E, 14.0* | Good | Bouin | C—P Sagittal | 10 | (Stain - Haematoxylin Eosin) | Mallory | 2 | 0.25 | 1944 | Tubal |
8355 | E, 15.0 Ch, 23 | Exc. | Formalin | C—P | Coronal | 10 | Azan | 1946 | Tubal. Duplicated spinal cord caudally | ||
8812 | E, 12_9 | Exc | Formalin | C—P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1950 | Rubella. Medical abortion. Midbrain punctured | ||
8945 | E, 13.9 | Good | Zenker | p | Transverse | 8 | Borax, carm. | 1952 | Univ. Chicago No. H 1254 | ||
9107 | E, 17.0 Ch, 38x28x22 | Good | Bouin | p | Transverse | 15 | Borax, carm. | 1918 | Univ. Chicago No. H 516 | ||
9247 | E, 15.0 | Exc. | Bouin | C—P | Sagittal | 8 | Azan | 1954 | Tubal | ||
Abbreviations
|
Trans. 20 Sag. 20 Trans. 10 Trans. 10 Trans. 40 Trans. 20 Sag. 50 Trans. 15 Trans. 50 p p Sag. 100 Trans. 20 Trans. 40 Cor. 40 Sag. 20 Sag. 20 Trans. 20 Trans. 10 Trans. 10 Trans. 8 Cor. 10&8 Cor. 10 Cor. 10 Sag. 10 Trans. 10 Cor. 10 Sag. 10 Sag. 8 Stain Year Al. coch. 1899 Al. coch. 1903 Al. carm., H. & 1904 Congo red H.&E. 1907 Al. coch. 1910 H. & Congo red 1911 Al. coch. 1912 Al. coch. 1912 Al. coch. 1913 p 1913 Carmine 1915 Al. coch. 1913 Al. coch. 1914 Al. coch. 1915 H.&E., or. G. 1915 Al. coch. 1916 H.&E. 1917 Al. coch. 1924 H.&E. 1927 H.&E. 1930 Notes Used by Bardeen and Lewis Macerated Tubal. Partly macerated Cyclopia. Formerly listed as stage 17 Median in group Macerated Spina bifida Abnormal head and limbs Advanced Near next stage Operative. Median in group Advanced Tubal. Mechanical injury Most-advanced third Median in group Near next stage Least-advanced third Ch. 30*23* 15 (continued)
Trans. 8 C-P Cor. 20
Close to No. 6507. Ag added
Surface injured by fixative. Most-advanced third
Least-advanced third. Borderline
Surface injured by fixative. Least advanced in group
Most-advanced third
Most-advanced third. Double left kidney and ureter
Close to No. 6516
Tubal. Partly macerated
Tubal. Advanced
Tubal. Advanced
Least-advanced third. Type specimen
Tubal. Partly fragmented Operative. Less advanced
OP Trans. 10 C-P Cor. 10 C-P Cor. 10
Cor. 10
C-P Trans 10
Al. coch. p Al. coch.
Al. coch.
Al. coch., iron H. •>
Al. coch. p Al. coch p
Al. coch.
Al. coch. >
Al. coch. ? Al. coch. 1933
H. & phlox. 1933 H.&E. 1934 Al coch., phlox. 1934
H.&E. 1934 H. & phlox 1935
Middle or most-advanced third p Least-adianced or middle third
7629 | E., 11.5 Ch., 31X31 | C-P |
7804 | E., 9.5 Ch., 26X21X16 | C-P |
7897 | E., 12.2 Ch., 31x24x23 | C-P |
8098 | E., 10.0 Ch., 30 | C-P |
8112 | E., 10.9 | GP |
8179 | E., 11.9 Ch., 23X18X17 | C-P |
8436 | E., 10.9 Ch., 13x15x1? | P |
8692 | E., 10 | P |
8697 | E., 11.3 | C-P |
8773 | E, 11 | |
8971 | E., 10 Ch., 20.5x14.5x13.7 | |
9055 | E., ca. 10 | |
9229 | E, 9.5 |
Plane
Cor.
Trans.
Trans.
Cor.
Cor. Cor.
Cor. Trans. Trans.
Thin- ness
(M-m) S t a i n
10 Al. coch., phlox. 10 H.&E. 10 H.&E. 6 H.&E. 8 H.&E. 10 H.&E. 10 Azan 10 H.&E. 10 H.&E. 10 Azan 15 H.&E. 20 Azan & Ag 6 Ag & H.&E. Y e a r 1939 1940 1941 1942 1943 1943 1946 1949 1949 1950 1932 1953 1954 Notes Hysterectomy. Most advanced in group Least-advanced third Tubal. Advanced Tubal. Median in group Most-advanced third Tubal Advanced Rubella. Medical abortion. Mechanically damaged Perhaps stage 17 Synophthalmia. Univ. Chicago No. H 1439 Damaged Stage 15, 16, or 17? Mislaid Grade Fixative Good Formol Good Formol Good Formol Good Formol Exc Bouin Good Formol Good Formol Good Bouin Poor Formol Exc. Bouin Poor Formol Exc. Bouin P Exc. Formol P
P Cor. Trans. Trans. Trans.
1987 - Stage 16 | Carnegie stage 16
Stage 17
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
1987 - Stage 17 | Carnegie stage 17
Stage 18
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
1987 - Stage 18 | Carnegie stage 18
Stage 19
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes |
---|---|---|---|---|---|---|---|---|---|
1987 - Stage 19 | Carnegie stage 19
Stage 20
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Point Score | Sex | Year | Notes |
---|---|---|---|---|---|---|---|---|---|---|---|
460 | |||||||||||
886 | |||||||||||
7274 | E, 18.5 Ch., 48x44x35 | Exc. | Bouin | C-P | Trans. | 20 | (Stain - Haematoxylin Eosin), phlox. | 20 | 9 | 1936 | |
7906 | |||||||||||
8517 |
1987 - Stage 20 | Carnegie stage 20
Stage 21
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Point Score | Sex | Year | Notes |
---|---|---|---|---|---|---|---|---|---|---|---|
7592 | E,22-> | Exc. | Bouin | C-P | Trans. | 20 | (Stain - Haematoxylin Eosin) | 36 | 9 | 1937 |
1987 - Stage 21 | Carnegie stage 21
Stage 22
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Point Score | Sex | Year | Notes |
---|---|---|---|---|---|---|---|---|---|---|---|
1987 - Stage 22 | Carnegie stage 22
Stage 23
Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Point Score | Sex | Year | Notes |
---|---|---|---|---|---|---|---|---|---|---|---|
1987 - Stage 23 | Carnegie stage 23
- 1987 Stages: Introduction | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | References | Appendix 1 | Appendix 2 | Historic Papers | Embryonic Development
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Cite this page: Hill, M.A. (2024, June 14) Embryology 1987 Developmental Stages In Human Embryos - Appendix 1. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/1987_Developmental_Stages_In_Human_Embryos_-_Appendix_1
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