US surgeons who transplanted a genetically modified pig kidney into a brain-dead patient announced Thursday they had ended their experiment after a record-breaking 61 days. The latest experimental procedure is part of a growing field of research aimed at advancing cross-species transplants, mainly testing the technique on bodies that have been donated for science. There are more than 103,000 people waiting for organ transplants in the United States, 88,000 of whom need kidneys. “We have […]