Screen-Shot-2014-04-01-at-1.45.51-PMNo this isn’t a joke, etc.: Scientists have grown working muscle fibers in the lab that they were then able to successfully implant into mice.  Even better, the muscles can repair themselves, which is a significant step in tissue engineering. “It’s the first time engineered muscle has been created that contracts as strongly as native neonatal [newborn] skeletal muscle,” Duke researcher Nenad Bursac told the BBC. To make the muscles as responsive and strong as the real thing, they created little gaps in the fibers where muscle stem cells could grow. This also allowed them to heal themselves, as Alan Boyle explained at NBC News: More