Category:Carnegie Embryo 7762

From Embryology

This Embryology category includes pages and images that relate to the Carnegie Collection Embryo No. 7762 and classified as Stage 6 occurring during Week 2.


Carnegie Collection Embryos
Serial No. Grade Fixative Embedding Medium Thinness (µm) Stain Year Notes
7762 Good Zenker—formol P 8  ? 1940 Wilson (1945)

Carnegie No. 7762, Rochester. Described by Wilson (1945).[1]

Curettage. Chorion, 2.3 x 2.2 x 2 mm. Larger villi have a mesoblastic core “and some show a tendency toward branching.” Moreover, “no evidence of actual blood vessels is seen in the villi, but in many of them groupings of angioblasts are observed.” Chorionic cavity, 1.75 x 1.3 x 1 mm.

Embryonic disc, 0.313 x 0.22 mm. Primitive streak, 0.04 mm. No definite allantoic diverticulum. Amniotic duct. Median reconstruction published (ibid., plate 3; Mazanec, 1959, fig. 36).[2]

References

  1. Wilson KM. A normal human ovum of sixteen days development (the Rochester ovum). (1945) Carnegie Instn. Wash. Publ. 557, Contrib. Embryol., Carnegie Inst. Wash., 31: 101-106.
  2. Mazanec K. Blastogenese des Menschen. (1959) Fischer, Jena.
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

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