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Wilehm Roux Arch Dev Biol
1982 May 01;1913:202-204. doi: 10.1007/BF00848336.
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Transient recovery from trypsin-caused reduction in fertilizability of sea urchin eggs.
Czihak G
,
Aketa K
,
Vogel H
,
Chang P
,
Wolf W
.
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The effect of trypsin on the fertilizability of sea urchin eggs was studied withParacentrotus lividus andPseudocentrotus depressus. The main effects were two reductions of fertilizability, with a transient increase intervening. The first decrease was probably caused by degradation of sperm-binding sites at the vitelline sheet and the second by degradation of binding sites on the plasma membrane.
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Protease released from sea urchin eggs at fertilization alters the vitelline layer and aids in preventing polyspermy.
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Vacquier,
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