Zona pellucida protein surrounding to oocyte is important in the proc ess of fertilization.
卵透明带蛋白围绕在卵母细胞外,在受精过程中起着重要作用.
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英英释义
Noun
1. thick membrane around the mammalian ovum; can be penetrated by one sperm in the fertilization process; usually remains around the fertilized egg until it is implanted in the wall of the uterus