what is zona pelusida ?
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thick transparent membrane surrounding a mammalian ovum before implantation.
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the thick transparent membrane surrounding a mammalian ovum before implantation.
Structure and function of the mammalian egg zona pellucida.
The zona pellucida supports communication between oocytes and follicle cells during oogenesis; protects oocytes, eggs, and embryos during development, and regulates interactions between ovulated eggs and free-swimming sperm during and following fertilization.
The zona pellucida is an extracellular matrix composed of three glycoproteins: ZP1, ZP2, and ZP3. ... Binding to ZP3 allows the sperm to adhere to the zona pellucida and is a critical step in fertilization. It triggers the sperm head to undergo the acrosome reaction.
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