Dr. Sanjay Gupta: At the forefront of organ transplants, patients are the pioneers

The story of transplants has always been one of altruism. After all, organs can be neither sold nor purchased. They can only be donated as a gift of life.

​ The story of transplants has always been one of altruism. After all, organs can be neither sold nor purchased. They can only be donated as a gift of life. Read More Breaking News, Latest News and Videos | CNN