知识贝壳
知识贝壳
所属栏目：英汉双解细胞与分子生物学
A membrane-bound sac in theanterior head region of a spermatozoon.In amammalian sperm it usually forms a cap overthe nucleus. It contains enzymes that are re-leased on contact with the egg at fertilization,as part of the ACROSOME REACTION.Theenzymes break ......（本文共 393 字 ） [阅读本文] >>