Ordinarily if something happens that causes a chunk of your body to be removed (like, say, a shark bite) there isn't a whole lot that can be done to fill it back in. Scar tissue will form over the wound and skin will eventually cover over it, but that doesn't cause lost muscle and bone to come back. It's kind of scary, when you think about it - what's lost is lost. But that may not be the caes for much longer. A research team active in the field of regenerative medicine at the McGowan Institute for Regenerative Medicine at the …