mercredi 25 février 2015

ELI5: If all the cells in our body are replaced every ~month. Why do we keep things like scars and wrinkles if they're not in our DNA?

Posted on 03:58 by Unknown | No comments
submitted by JarkoStudios to explainlikeimfive

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from reddit: the front page of the internet http://ift.tt/1wb6WrY
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