An infant known as "Baby Fae" received a baboon's heart in an experimental transplant at Loma Linda University Medical Center in California by Dr. Leonard Bailey and his team. Despite the surgery's initial success, Baby Fae's body began to reject the baboon heart and she died 21 days after the transplant on November 15.
The procedure sparked significant ethical debates and led to stricter regulations for cross-species transplants, though it also highlighted the critical need for more donor organs. More