In this program Donald Crowdis, Director of the Nova Scotia Museum of Science, talks about transplants and the new study of immunology - how to make the body repress its defence system and accept foreign organs. His guests are Dr. R.E. Wilson of Peter Bent Brigham Hospital in Boston, a member of the most experienced organ transplant surgical team in North America, and Dr. Lionel Reese, who recently performed a kidney transplant operation in London, Ontario.