A synthetic polymer nose, left, and ear are posed to be photographed at a research facility in the Royal Free Hospital in London, March 31, 2014.
While only a handful of patients have received the British lab-made organs so far— including tear ducts, blood vessels and windpipes — researchers hope they will soon be able to transplant more types of body parts into patients, including what would be the world's first nose made partly from stem cells. "It's like making a cake," said Alexander Seifalian at University College London, the scientist leading the effort. "We just use a different kind of oven."