A region of repeating DNA at the end of a chromosome that protects the chromosome from decaying.

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Regarding cellular self-destruction

I heard and read telomere 'health' or 'length' ( if that's right ) has alot to do with cell 'health'. If telomere 'abilities' are 'restored' to a 'healthier' status then the cell it is in functions as ...
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Can we define biological age?

How can we define ageing from a biological standpoint without making an appeal to chronological age? Related, but less important, are there any metrics we can use to determine someone's biological ...