File:Hertig1956 fig60.jpg

Fig. 60. 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 of the ovum shown in figure 59 to sho\v the variation of nuclear form. The blastomere at the left contains numerous small rounded nuclei or nuclear fragments. The middle blastomere contains a large indistinct nucleolus and the one on the right contains three pairs of chromatin masses that strongly suggest, a disintegrating mitotic figure of triaster type. Note two polar bodies below and artifactitiously ruptured zona. Carnegie 8630, Section 9. 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, April 27) Embryology Hertig1956 fig60.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Hertig1956_fig60.jpg

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