File:Hertig1956 fig23.jpg

Fig. 23.

Three 9-day specimens of Horizon Vb, characterized by syncytiotrophoblastic lacunae with early utero-placental circulation, amniogenesis, a simple bilaminar germ disc and only variable degrees of exocoelomie (Heuser’s) membrane formation.

23 Detail of embryo, chorionic cavity and surrounding trophoblast. The maternal hemorrhage in the chorionic and amniotic cavities is abnormal and the result of communication of the trophoblastic lacnmae and chorionic. cavity through a. defective chorionic membrane. A few mesoblnsts are delaminating from the cytotrophoblast but in general this process appears to be delayed perhaps due to the above mentioned hemorrhage. Note mitotic figure in cytotrophoblast. Carnegie 8004, Section 11-4-4. X 300.

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Reference

Hertig AT. Rock J. and Adams EC. A description of 34 human ova within the first 17 days of development. (1956) Amer. J Anat., 98:435-493.

Cite this page: Hill, M.A. (2024, April 27) Embryology Hertig1956 fig23.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Hertig1956_fig23.jpg

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