Dynamics of the mammalian sperm membrane modification leading to fertilization: a cytological study |
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Authors: | Toshimori Kiyotaka |
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Affiliation: | Department of Anatomy and Developmental Biology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chiba 260-8670, Japan. ktoshi@faculty.chiba-u.jp |
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Abstract: | Fertilization occurs when the sperm penetrates the egg, resulting in the combination of paternal and maternal genomes for the propagation of generations. To perform the task, the mammalian sperm membrane system, constructed during spermatogenesis, undergoes biochemical and cytological modifications. In this review, the following three points are discussed: (i) the nature of the acrosomal membrane disclosed by various types of microscopy, including transmission electron microscopy and the recently developed high-resolution fluorescence microscopy, (ii) the nascent acrosomal membrane dysfunction during acrosome biogenesis and (iii) the modification of the sperm membrane during sperm-egg interaction. |
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