File:Hertig1945d fig09.jpg

From Embryology

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Fig. 9. A mid-cross section of a 9.5 -day ovum

The amniotic cavity is well formed, as are the enclosing amniogenic cells although the latter are still attached in places to their parent trophoblast. Mesoblastic formation is scanty and is represented in this section by two delaininating cel s seen toward the lower left, of the chorionic cavity. The granular material in the latter is extravasated blood which is a possible factor in delaying the formation of the mesoblast. Carnegie 8004, section 11-4-4, x 160.


Hertig AT. On the development of the amnion and exocoelomic membrane in the previllous human ovum. (1945) Yale J Biol Med. 18:107-15. PubMed 21007544

Cite this page: Hill, M.A. (2024, April 22) Embryology Hertig1945d fig09.jpg. Retrieved from

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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