AdvertisementDoctors transplant a genetically modified pig heart into a human for the 1st timeJanuary 10, 2022The Associated PressfacebookEmailIn this photo provided by the University of Maryland School of Medicine, members of the surgical team perform the transplant of a pig heart into patient David Bennett in Baltimore on Friday. On Monday, the hospital said that he's doing well three days after the highly experimental surgery. (University of Maryland School of Medicine via AP)