"A team of scientists at Massachusetts General Hospital in Boston made news earlier this month when they published research in the journal Biomaterials describing how they'd created the world's first bioartificial limb in the laboratory."

"Or, in other words: scientists have now grown the entire forelimb of a rat in a lab."

"Dr. Harold Ott, head of the Ott Laboratory for Organ Engineering and Regeneration, and his team were able to "engineer rat forelimbs with functioning vascular and muscle tissue," according to the hospital."