获能后 透明带 processes of fertilization 一穿入后的精子尾 acrosome reaction 子头部 /hyaluronic acidase: dissolve corona radiate interact with ZP3(receptor glycoprotein, exist in zona pellucid) molecules, release acrosin dissolve zona pellucid enter perivitelline space---processes of fertilization: 1) acrosome reaction: /hyaluronic acidase: dissolve corona radiate * interact with ZP3(receptor glycoprotein, exist in zona pellucide) molecules, release /acrosin: dissolve zona pellucide /enter perivitelline space