He is one of only a handful of patients who have undergone the experimental procedure. For now, he’s the lone person in the United States known to be living with a pig kidney.

A pig kidney kept an Alabama woman alive for five months - longer than anyone ever before. Doctors aren't sure yet why it suddenly stopped.

He is one of only a handful of patients who have undergone the experimental procedure. For now, he’s the lone person in the United States known to be living with a pig kidney.