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Updated: Aug 17, 2026

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Imaging Calcium in Drosophila at Egg Activation
Published on: August 6, 2016
Calcium ionophore polarizes ooplasmic segregation in ascidian eggs
Abstract:
Calcium ionophore A23187 promotes ooplasmic segregation and orange crescent formation in eggs of the ascidian Boltenia villosa. When eggs were exposed to a gradient A23187 the orange crescent was induced to form in the region corresponding to the highest concentration of ionophore. This result is consistent with the hypothesis that a local increase in intracellular calcium polarizes cytoplasmic localization in the ascidian embryo.
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