Lead: Building on two centuries of research and experimentation, South African Dr. Christaan Barnard performed the first heart transplant.

Intro: A Moment in Time with Dan Roberts.

Content: Though he was the first surgeon to successfully transplant a human heart, Dr. Barnard was using a technique developed by an American team at Stanford University Medical Center, led by surgeon Norman Shumway, who was considered by many to be the father of heart transplantation. In 1958 Shumway had transplanted the first heart in a dog. He and his associates had spent most of the early 1960s developing heart-lung machines and progressively removing the obstacles to organ transplantation. By the middle of the decade only the issue of immunosuppression seemed to be blocking the way. The body of the patient had a natural tendency to reject donor tissue as an alien to be destroyed.