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Oocyte reaction to penetrating sperm

Published online by Cambridge University Press:  26 September 2008

G. Galeati
G. Galeati
Affiliation:
Istituto di Fisiologia Veterinaria-Ozzano Emilia, Bologna, Italy
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Extract

Before fertilisation the egg is metabolically quiescent and its nucleus is arrested at metaphase of the second meiosis. After sperm-egg fusion, the arrested nucleus resumes meiosis, and then changes into the female pronucleus. Such a sequence of morphological and biochemical events is called “activation”. The inital responses of the egg to activation by the sperm include cortical granule exocytosis and resumption of meiosis.

Type
Article
Information
Zygote , Volume 2 , Issue 4 , November 1994 , pp. 355 - 358
Copyright
Copyright © Cambridge University Press 1994

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