File:Hertig1956 fig53.jpg

Fig. 53. A 17-day ovum

Showing the further development of the branching villi with their anchorage to the cytotrophoblast of the placental floor. Note expanded intervillous space connecting with numerous prominent thin-walled maternal sinusoids thus constituting the utero-placental circulation. This is the beginning of a more active flow of innternzil blood through the placenta although small but increasing amounts of such blood have been present since the 10th day. Note also the decidua around the ovum with many darkly staining tlettielied syncytiotrophoblastic giant cells. Carnegie 8602, Section 25—3—2. X 30.

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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 fig53.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Hertig1956_fig53.jpg

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