For the first time, scientists have coaxed a damaged heart to regrow healthy tissues on its own. They applied living "patches" to a heart, in what is a major breakthrough for people recovering from heart attacks.
A group of engineers at Columbia University built on previous research into growing hearts using a "tissue scaffold," a piece of stripped-down heart muscle that's pure protein. They used a similar kind of tissue scaffold to grow human heart replacement parts. Delivering these pre-made parts to the heart is a far easier and less invasive process than similar cell infusion treatments.