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acrosome

   Also found in: Medical, Encyclopedia, Wikipedia 0.02 sec.
ac·ro·some  (kr-sm)
n.
A caplike structure at the anterior end of a spermatozoon that produces enzymes aiding in egg penetration.
[acro- + -some.]
acro·somal (-sml) adj.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.acrosomeacrosome - a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg
sperm, sperm cell, spermatozoan, spermatozoon - the male reproductive cell; the male gamete; "a sperm is mostly a nucleus surrounded by little other cellular material"
appendage, outgrowth, process - a natural prolongation or projection from a part of an organism either animal or plant; "a bony process"


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For instance, frog sperm have an acrosome, a structure that releases enzymes that penetrate the outer membrane of eggs during fertilization.
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Bishop (Roman Danylak) reclaims Diocesan authority over school texts by Danylak, Roman / Catholic Insight
The human acrosome reaction is highly sensitive to inhibition by cyclodiene insecticides.
Xenoestrogen-induced ERK-1 and ERK-2 activation via multiple ... by Watson, Cheryl S. / Environmental Health Perspectives
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