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Oocyte activation Main event of fertilisation process
 Exocytosis of cotrical granules  Resumption of meiosis
 PN formation
 Regulation of protein synthesis
Also affects
 Onset of cleavage
 Embryonic genome activation
 Pre‐ and post‐implantation development
Elevation of intracellular calcium is the fertilisation signal in all phyla
Stricker, Dev Biol 1999
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