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Fig. 492. Successive stages in the implantation of the ovum of Spermophilus citillus
(Spermophilus citillus = a ground squirrel of Europe and Asia.)
Rejsek.
a- Ovum (blastodermic vesicle) lying free in the uterine cavity, b, Later stage in which the syncytial knob (thickening of trophoderm) has penetrated the uterine epithelium as far as the basement membrane, c, Still later stage in which the trophoderm has penetrated the uterine stroma; the cells of the uterine epithelium at the point of entrance are degenerating.
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Reference
Bailey FR. and Miller AM. Text-Book of Embryology (1921) New York: William Wood and Co.
Cite this page: Hill, M.A. (2024, April 27) Embryology Bailey492.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Bailey492.jpg
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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