这个词是什么意思？
The cap-like structure covering the anterior portion of SPERM HEAD. Acrosome, derived from LYSOSOMES, is a membrane-bound organelle that contains the required hydrolytic and proteolytic enzymes necessary for sperm penetration of the egg in FERTILIZATION.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000177 · MeSH 2026。
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