Paul M, Johnston R N
J Exp Zool. 1978 Jan;203(1):143-9. doi: 10.1002/jez.1402030114.
Sea urchin eggs take up Ca for 10 min following insemination (determined as uptake of 45Ca 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 (o-30 sec) which precedes the cortical reaction; this may represent a Ca flux into the eggs.
海胆卵在受精后会摄取钙离子10分钟（通过从人工海水（SW）中摄取45Ca来确定（3））。虽然这种摄取的90%发生在皮层反应开始之后，可能代表钙离子与卵表面包膜的外部结合，但在皮层反应之前有一个短暂的摄取阶段（0 - 30秒）；这可能代表钙离子流入卵内。
