In this 1989 photograph, Thomas Starzl oversees a liver transplant operation at the University of Pittsburgh Medical Center. Starzl won a National Medal of Science in 2004.
Gene J. Puskar/AP
Dr. Dorry Segev (right), of Johns Hopkins Medicine, led the team of doctors that transplanted an HIV-positive liver and kidney into two different HIV-positive patients this month.
Johns Hopkins Medicine
Amber Cooper lives in Modesto, Calif., with her 5-year-old son, Jaden, and her husband, Kevin. She had a liver transplant when she was 10 years old and has to take anti-rejection medication.
Deanne Fitzmaurice for NPR
All in the family: Nino Giarratano (left), the head baseball coach at the University of San Francisco, joins hands with his father, Mickey Giarratano, after the transplant of a kidney from son to father at Porter Adventist Hospital in Denver last year.
AP/Courtesy Giarratano Family