Category:Carnegie Embryo 8819

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This Embryology category includes pages and images that relate to the Carnegie Collection Embryo No. 8819. This embryo was classified as Stage 6 occurring during Week 2. Edwards-Jones-Brewer.

Online Editor Though listed in the collection tabulated data as 1951, the embryo was collected in 1934.


Stage 6 Links: Week 2 | Implantation | Lecture | Practical | Carnegie Embryos | Category:Carnegie Stage 6 | Next Stage 7
  Historic Papers: 1909 | 1925 | 1937


Serial No. Grade Fixative Embedding Medium Thinness (µm) Stain Year Notes
8819 Exc. Formol-chrom. subl. C—P 8 (Stain - Haematoxylin Eosin) 1951 Edwards-Jones-Brewer (H1496). [1][2]
Abbreviations
  • Grade - total grade of the specimen and includes both its original quality and the condition of the mounted sections.
  • Embedding medium - paraffin (P) or a combination of celloidin and paraffin (C-P).
  • Fixative - formalin (Formol), alcohol and formalin (Alc, formol), Bouin (Bouin solution)
  •  ? - unknown or not determined.

Described in detail by Brewer[1][2]. Hysterectomy. “There is no branching of a mesodermal villus.” Chorion, 3.6 x 3 x 1.9 mm. Chorionic cavity, 1.85 x 1.71 x 1.01 mm; capacity, 13.38 mm3. Embryonic disc, 0.209 x 0.177 mm; volume, 0.0814 mm3. Primitive streak, 0.04 mm, claimed, but its presence was denied by Krafka (1941). No allantoic diverticulum. Dorsal and median projections published (Brewer, 1938[2], plate 1, figs. 2 and 3; Mazanec, 1959, fig. 33). Some authors have attempted to identify a prechordal plate from the median projection.

Carnegie Collection - Stage 6 
Serial No. Grade Fixative Embedding Medium Thinness (µm) Stain Year Notes
6026 Poor ? ? 6? (Stain - Haematoxylin Eosin) 1929 Lockyer embryo. Abnormal. Ramsey (1937)
6734 Poor Zenker—acetic P 10 (Stain - Haematoxylin Eosin) 1934 Yale embryo. Ramsey (1938)
6900 Poor Formol P 15 (Stain - Haematoxylin Eosin) 1940 Linzenmeier (1914)
7634 Poor Formol P 10 (Stain - Haematoxylin Eosin) etc. 1940 Torpin embryo. Kraflca (1941)
7762 Good Zenker—formol P 8 ? 1940 Wilson (1945)
7800 Exc. ? C—P 8 (Stain - Haematoxylin Eosin) 1940 Abnormal
7801 Exc. Bouin C—P 8 (Stain - Haematoxylin Eosin) 1940 Heuser et al. (1945)
7850 Exc. Alc. & Bouin C—P 6 (Stain - Haematoxylin Eosin) 1940 Abnormal
8290 Exc. Bouin C—P 8 H. phlox. 1944
8360 Exc. Alc. & Bouin C—P 6 (Stain - Haematoxylin Eosin), phlox. 1944
8362 Poor p C—P 6 (Stain - Haematoxylin Eosin), phlox 1944
8672 Exc. Ale. & Bouin C—P 6 (Stain - Haematoxylin Eosin) 1949
8819 Exc. Formol—chrom. subl. C—P 8 (Stain - Haematoxylin Eosin) 1951 Edwards-Jones-Brewer (H1496). Brewer (1937, 38)[1][2]
8905 Poor Ale. p 6 (Stain - Haematoxylin Eosin), phlox. 1951 Abnormal
8910 Good Formol C—P 8 (Stain - Haematoxylin Eosin), phlox. 1951
9222 Good Bouin C—P 6 & 10 Azan 1954 Abnormal. Possibly stage 7
9250 Exc. Bouin p 8 (Stain - Haematoxylin Eosin) 1954
9595 Poor p p 8 (Stain - Haematoxylin Eosin) 1958
10003 Good Bouin p 5 Various 1963
Abbreviations
  • Grade - total grade of the specimen and includes both its original quality and the condition of the mounted sections.
  • Embedding medium - paraffin (P) or a combination of celloidin and paraffin (C-P).
  • Fixative - formalin (Formol), alcohol and formalin (Alc, formol), Bouin (Bouin solution)
  •  ? - unknown or not determined.
References

References


Brewer JI. A normal human ovum in a stage preceding the primitive streak (The Edwards-Jones-Brewer ovum). (1937) Amer. J Anat., 61: 429-481.

Pages in category ‘Carnegie Embryo 8819’

The following 2 pages are in this category, out of 2 total.

Media in category ‘Carnegie Embryo 8819’

The following 38 files are in this category, out of 38 total.