File:Hertig1945d fig04.jpg

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Fig. 4.A section of a. 7.5-day ovum

The same ovum as shown in figs. 2 and 3 but the section passes to one side of the germ-disk. Note at the embryonic pole the three prominent mesoblastic cells which are delaminating in situ from the adjacent troplgoblast. A somewhat more advanced stage of this process is seen in the two mesoblastic cells shown in fig. 5. Carnegie 8020, section 6-3-6, X 300 (plus).


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 21) Embryology Hertig1945d fig04.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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