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Maroc Maroc - ONCOLOGYNEWS.COM.AU - A La Une - 07/Dec 06:57

Scientists can finally answer an old question about cellular ageing

After a finite number of divisions, cells simply give up. As each round of replication trims their telomeres—the protective caps at the chromosome ends—those caps eventually become too short to prevent chromosome ends from being recognised as DNA breaks. As a result, cells permanently arrest, a phenomenon known as replicative senescence. This telomere-dependent limit to [...]

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