Figs. 3a-f. Series of sections through a stage 1a embryo in vitro showing telophase II of the second polar body, 3 hours post-insemination. |
Fig. 3a. 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. |
(From: Lopata et al., 1980. Reproduced with permission of the American Society for Reproductive Medicine.) |
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