Surgeons tested a pig kidney transplant in a human patient — and for the first time, it worked

A pig's kidney has been transplanted into a human and was not immediately rejected for the first time. The medical advancement, called a "transformative moment" by researchers, could pave the way to help the thousands of people in need of organ transplants every year. 

On September 25, researchers at New York University performed the transplant, called xenotransplantation, in a two-hour procedure. The kidney, which was obtained from a genetically engineered pig, was placed in a brain dead human who had been placed on a ventilator with the consent of her...