Man, 62, in Boston is given a PIG'S kidney just days after Chinese doctors transplanted liver from hog into 50-year-old patient, in double medical breakthrough

Animal-to-human transplant science took a major step forward this week after surgeons transplanted a kidney and a liver from pigs into humans. In Boston, a 62-year-old terminal patient received a genetically-altered kidney from a pig in a world first earlier this month. The new organ began to produce urine almost immediately, doctors at Mass General said, and the patient is stable and walking. Meanwhile, in China, a 50-year-old brain-dead man became the first to receive a genetically-engineered liver from a pig -- which was kept in his body for 10 days. Surgeons say the organ's color and texture appeared'normal' upon extraction and that it was even secreting bile -- a fluid aiding digestion.