顶体 (精子)
来自维基百科,自由的百科全书
来自维基百科,自由的百科全书
顶体(英語:acrosome,来自希腊语:acron (外面)和soma (体))是動物精子核前部由高基氏体所衍生来的顶状膜包结构,实际上是特殊的溶酶体。[1][2]在真獸下綱的哺乳動物中,頂體含有多种酶(包括玻璃酸酶和頂體酶)[3],這些酶可以破壞卵子外圍被稱為透明帶的膜,以將精子的單倍體細胞核與卵子內的單倍體細胞核相結合。[4]
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