When a piece of skin, muscle, bone, nails, or hair gets removed or damaged, those usually grow back like nothing happened. So, why isn’t it possible for hands, or even something smaller like a finger to regrow? Or would a piece of meat just regrow there instead of something useful?
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Skin doesn’t grow back. The losses are replaced with scar tissue, which doesn’t have the same characteristics as skin; skin-as-an-organ remains damaged, but the holes are crudely patched.
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