When this ability was damped down by removing a key muscle production gene from the fish, they produced scars at the wound site instead.

BBC: Zebrafish hold clue to mending hearts

This could help scientists identify key genes for growing heart muscle and other tissues, leading to new treatments for heart failure.

FORBES: Science Beyond Belief

Once her body starts burning protein for energy, he says, she will be in a race to hit Key West before her body destroys muscle tissue.

CNN: Nyad: Swim shows 60s 'not too late' for goals

Mauga, a key backup and special teams performer, missed 11 games last season with a torn pectoral muscle and was a restricted free agent.

WSJ: Jets OC: Sanchez has 'leg up' in QB competition