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| 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
- 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
- ↑ Ingalls, N.W. 1920. A human embryo at the beginning of segmentation, with special reference to the vascular system. Carnegie Instn. Wash. Publ. 274, Contrib. Embryol., 11, 61-90.
- ↑ Davis, C. L. 1927. Development of the human heart from its first appearance to the stage found in embryos of twenty paired somites. Carnegie Instn. Wash. Publ 380, Contrib. Embryol., 19, 245-284.
- ↑ PARK WW. (1957). The occurrence of sex chromatin in early human and macaque embryos. J. Anat. , 91, 369-73. PMID: 13448995
|
