mathoda.com

I remember in AP Biology class watching with wonder as nematodes regenerated lost limbs. Humans sadly don’t regenerate appendages or nerves or pretty much anything else. Neither, to my knowledge, do any other mammals.  Why not? Somewhere on the evolutionary tree the ability was lost.

It seems farfetched that a human or any other mammal could regenerate a limb or a nerve, but a lot of things that seem farfetched are actually consistent with the way the world really works, if only you know what actions to take.  For example, researchers at MIT and Hong Kong University have now regenerated optical nerves in hamsters: http://msnbc.msn.com/id/11812319/

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