(三)精子进入卵黄膜内 Sperm Enters Oocyte 1.透明带反应( ZP Reaction) 2.卵黄膜封阻反应( Egg Plasma Membrane Reaction) Inner acrosomal membrane Nucleus E Newly forming nuclear membrane C（三）精子进入卵黄膜内 Sperm Enters Oocyte 1.透明带反应(ZP Reaction) 2.卵黄膜封阻反应(Egg Plasma Membrane Reaction)