transplants
Hospitals and organ banks could get more leeway in decisions about donations. Sean Gallup/Getty Images hide caption
Starting a bone marrow registry in Nigeria "became an obsession" for Seun Adebiyi. "I thought that even if I couldn't find a match, I wanted to make it easier for other black patients to find a match." Seun Adebiyi hide caption
Charla Nash received a full-face transplant after she was mauled by a chimpanzee in 2009. HO/AFP/Getty Images hide caption
A surgical team performs a full face transplant on Charla Nash at the Brigham and Women's Hospital in Boston. Lightchaser Photography hide caption