In this episode of The Story Behind the AP Story, we hear from Lauran Neergaard and Shelby Lum, who have been following the journey of animal to human transplants, or xenotransplants, over the last few years.

A woman who received a pig kidney transplant has died.

Doctors say a woman who received a pig kidney transplant is back on dialysis after surgeons removed the gradually failing organ.

A New Jersey woman who was near death has received a transplanted pig kidney, part of a dramatic pair of surgeries that also stabilized her failing heart.