The medical community is now capable of performing successful organ transplants, and many countries have medical programs where individuals can donate organs and tissue to help those who require transplants. Since the 1970s, the level of transplant success has increased dramatically: from the first use of the immunosuppressive drug, cyclosporine, in humans in 1978, survival rates for liver and kidney transplants have doubled, and rejection of heart transplants has been all but eliminated. The writers describe the organ and tissue transplants currently being performed throughout the medical community.