Mice

Drugs that kill off old cells may limit a body's aging

4 monthes ago   |   By Ars Technica

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We have a good idea of what makes individual cells old. Things like DNA damage, shortened chromosome ends, and a lack of proliferative ability can all cause cells to basically shut down-they don't die, but they stop dividing and become quiescent. But we don't have a strong sense of what makes an organism old. It could be the cumulative effect of lots of their cells getting old, or there may be additional means of registering an organism's age.
Now, a new study suggests at least part of the answer may be a mix of the two. The study, done using mice, indicates that having a small...
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