Tim Andrews is recovering well after receiving a kidney from a genetically modified pig. Massachusetts General Hospital is ...

Tim Andrews had not felt great in a long time, but he says all that changed when he became the second patient at Massachusetts General Hospital to undergo a pig kidney transplant. "During the dialysis ...

Beneath it sits the kidney of a genetically modified pig that surgeons transplanted into his body six weeks ago. Dr. Leonardo Riella squirts a cold gel on Andrews’ belly, and presses an ...

After years of research into xenotransplantation, the field is at a turning point—yet risks and ethical issues remain ...

Over the past few years, a handful of people in the United States and China have received specially modified pig kidneys, hearts and livers, but getting those organs to function safely in a person ...