ECB-ART-31494
J Electron Microsc Tech
1991 Mar 01;173:266-93. doi: 10.1002/jemt.1060170304.
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Multiple intracellular signals coordinate structural dynamics in the sea urchin egg cortex at fertilization.
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Fertilization of the sea urchin egg is accompanied by a sequence of structural changes in the egg cortex that include exocytosis, endocytosis, and microvillar growth. This architectural reorganization is coordinated by two intracellular signals: a rapid, transient rise in cytosolic free calcium and a slower, longer lasting increase in cytoplasmic pH. In this report we provide ultrastructural views of these events in quick-frozen eggs and discuss their relationship to the calcium and pH signals.
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Genes referenced: LOC100887844 LOC593358