Receptors for sperm binding in mammals are present on :
Corona radiata
Vitelline membrane
Perivitelline space
Zona pellucida
Zona pellucida has receptors for sperm binding (ZP3 receptors) in mammals. Corona radiata is a layer of radially arranged cells of membrana granulosa. Perivitelline space is present in between vitelline membrane and zona pellucida.
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