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  
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.

See also the later 2010 paper by the same authors - O'Rahilly R & Müller F. (2010). Developmental stages in human embryos: revised and new measurements. Cells Tissues Organs (Print) , 192, 73-84. PMID: 20185898 DOI.

Links: Embryonic Development | Carnegie Collection | Carnegie Embryos | Ronan O'Rahilly | Fabiola Müller

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
Historic Disclaimer - information about historic embryology pages 
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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 great- est 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 pro- vided. 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 in- dices 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 deter- mined, is included (see p. 237).


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 con- tribution has been of enormous value to early human embryology.


The specimens in the excellent embryological col- lection 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 Uni- versity, 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

8190 8260 8450 8452 8500.1 8630 8698 8904

Stage 3

8663 8794

Stage 5

Stage 5a

8020 8155 8225

Stage 5b

8004 8171 8215 9350


Stage 5c

4900 Poor 7699 Exc. 7700 Exc. 7770 Exc. 7771 Exc. 7950 Exc. 8000 Poor 8139 Exc. 8299 Exc. 8329 Exc. 8330 Exc. 8370 Poor 8558 Exc.


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
Historic Disclaimer - information about historic embryology pages 
Mark Hill.jpg
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)



Cite this page: Hill, M.A. (2024, March 28) 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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