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karyorrhexis : ウィキペディア英語版 | karyorrhexis
Karyorrhexis (from Greek κάρυον ''karyon'', "kernel, seed or nucleus", and ῥῆξις ''rhexis'', "bursting") is the destructive fragmentation of the nucleus of a dying cell whereby its chromatin is distributed irregularly throughout the cytoplasm. It is usually preceded by pyknosis and can occur as a result of either programmed cell death (apoptosis), senescence, or necrosis. In apoptosis, the cleavage of DNA is done by Ca2+ and Mg2+ -dependent endonucleases. == See also ==
*Apoptosis *Karyolysis
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