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XB-ART-54506
Wilehm Roux Arch Dev Biol 1979 Mar 01;1861:91-94. doi: 10.1007/BF00848113.
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Cinematographic observation of an "activation wave" (AW) on the locally inseminated egg ofXenopus laevis.

Hara K , Tydeman P .


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Shortly after local artificial insemination, but well before egg rotation,Xenopus eggs show a wave-like propagation of dark-light-dark zones from the site of sperm entrance. This presumably reflects the movement of the front of cortical granule breakdown.

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References [+] :
Balinsky, Changes in the ultrastructure of amphibian eggs following fertilization. 1966, Pubmed