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Uptake OF Ca2+ is one of the earliest responses to fertilization of sea urchin eggs

✍ Scribed by Paul, Miles ;Johnston, Randal N.

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
351 KB
Volume
203
Category
Article
ISSN
0022-104X

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✦ Synopsis

Abstract

Sea urchin eggs take up Ca for 10 min following insemination (determined as uptake of ^45^Ca from the SW (3)). Although 90% of this uptake occurs after the beginning of the cortical reaction and may represent external binding of Ca to the egg surface coats, there is a brief phase of uptake (0–30 sec) which precedes the cortical reaction; this may represent a Ca flux into the eggs.

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