File:Wallaby embryo 02.jpg

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Tammar Wallaby Embryo and Fetus

At day 18, the conceptus emerges form the ruptured shell coat (Sh) so that the two regions of the placenta can make a close attachment to the uterine epithelium. The right side of the embryo is already coat-free, while the embryo itself is still within the shell coat.

Legend

All - allantois
Am - amniopore
BYS - bilaminar yolk sac
TYS - trilaminar yolk sac
Sh - shell coat
ST - sinus terminalis
Ut - uterine epithelium

Reference

Menzies BR, Pask AJ & Renfree MB. (2011). Placental expression of pituitary hormones is an ancestral feature of therian mammals. Evodevo , 2, 16. PMID: 21854600 DOI.

Copyright

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Cite this page: Hill, M.A. (2024, April 28) Embryology Wallaby embryo 02.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Wallaby_embryo_02.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	13:10, 23 May 2012		1,138 × 986 (89 KB)	Z8600021 (talk \| contribs)	==Tammar Wallaby Embryo and Fetus== (a) At day 18, the conceptus emerges form the ruptured shell coat (Sh) so that the two regions of the placenta can make a close attachment to the uterine epithelium. The right side of the embryo is already coat-free, w

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