Fig. 3 A series of six high power LMs of sections through a stage 1a embryo in vitro showing telophase II of the second polar body, 3 hours post-insemination.
(From: Lopata et al., 1980. Reproduced with permission of the American Society for Reproductive Medicine.)
a) Sperm tail (arrow) is evident close to the fertilization cone. The zona pellucida and corona radiata cells are outside the subzonal space. A few tiny vacuoles are in the cytoplasm. (original magnification x740)
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