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Science 30 April 1982:
Vol. 216. no. 4545, pp. 545 - 547
DOI: 10.1126/science.6803360
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Articles

Science, Vol 216, Issue 4545, 545-547
Copyright © 1982 by American Association for the Advancement of Science

articles

Calcium ionophore polarizes ooplasmic segregation in ascidian eggs

WR Jeffery

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.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Lineage-specific development of calcium currents during embryogenesis.
L Simoncini, M. Block, and W. Moody (1988)
Science 242, 1572-1575
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