File:Hertig1956 fig66.jpg

From Embryology

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Fig. 66. Abnormal ova of the pre-implantation stage

Appear to be 3 to 5 days of age on the basis of coital data, endometrial findings and ovular development. Abnormality of nulltinucleated blastomeres and some show variable degrees of cellular degeneration or necrobiosis.


A section through the greatest diameter of the ovum shown in figure 65. Note intact zona, the polar body and the variation in size, shape and staining reaction of the blastomeres. The pale, larger cells may be of potential embryonic nature, whereas the darker irregular multinucleated ones may be of future trophoblastic type. Carnegie 8452, Section 8. X 500.


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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, May 24) Embryology Hertig1956 fig66.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Hertig1956_fig66.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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