File:Hertig1956 fig52.jpg

Fig. 52.

Low-power views of sevtions from the two villous ova illustrated on plate 9.

52 A 16-day ovum showing branched villi on the entire external surface of the chorion. Note that the cytotrophoblast at the peripheral tips of the villi is beginning to coalesce to form the placental floor which is penetrated by nmternal blood vessels of the utero-placental circulation. Note large sinusoid at upper right. The decidual reaction around the entire surface of ovum is prominent, thus foreshadowing the formtion of the decidual basalis and capsularis. Carnegie 7802, Section 4-4~3—5. 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 fig52.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Hertig1956_fig52.jpg

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