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No Correlation of Telomere Length with Longevity in Nematodes

Average telomere length in cells reflects some combination of cell division rates and cell replacement rates: telomeres shorten with each cell division until cells self-destruct because telomeres are too short, and replacements are generated with long telomeres by stem cells. The stem cell activity that delivers those replacements tends to decline with age, and so average telomere length tends to decrease as well.
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