during 1 h major polypeptides of mr 180,000 ( present on the zona pellucida of eggs but absent from that of oocytes ) and 80,000 were hydrolysed , giving rise to polypeptides of mr 68,000 , 54,000 and 46,000 , of which the last accumulated and represented the lowest molecular weight hydrolysis product .
C0043519
zona pellucida
C0029045
oocytes