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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.

Year introduced: 1991(1975)

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Tree Number(s): A05.360.490.890.820.100, A11.284.430.214.190.875.190.550.040, A11.497.760.400.100

MeSH Unique ID: D000177

Entry Terms:

  • Acrosomes

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