This is a preview. Log in through your library . Abstract Previous work has established that the polyspermy block in Urechis acts at the level of sperm-egg membrane fusion. (J. Exp. Zool. 196:105).
This is a preview. Log in through your library . PNAS is the world's most-cited multidisciplinary scientific serial. It publishes high-impact research reports, commentaries, perspectives, reviews, ...
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