Category:Carnegie Embryo 8905
This Embryology category includes pages and images that relate to the Carnegie Collection Embryo No. 8905. This embryo was classified as Stage 6 (historically Stage 6a) occurring during Week 2.
Stage 6 Links: Week 2 | Implantation | Lecture | Practical | Carnegie Embryos | Category:Carnegie Stage 6 | Next Stage 7 |
Historic Papers: 1909 | 1925 | 1937 |
Carnegie No. 8905, Merrill. Unbranched villi. Although an abnormal leucocytic reaction is present, this specimen “represents the best example in the author’s collection of formation of early primordial villi, active mesogenesis and angiogenesis, completion of the amnion and the transitional phase between the primary and definitive [secondary] yolk sac formation” (Hertig, 1968, who reproduced a photomicrograph as fig. 55). Presumed age, 12-13 days.
References
Hertig AT. Adams EC. Mckay DG. Rock J. Mulligan WJ. and Menkin MF. A thirteen-day human ovum studied histochemically. (1958) Am. J. Obstet. Gynecol., 76(5): 1025-40. PMID 13583048
Carnegie Collection - Stage 6 | ||||||||||
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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
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References
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