The book is devoted to the history of the formation of a new immunology, which appeared only two decades ago, but without which organ and tissue transplants are unthinkable these days, an effective fight against cancer, and the further development of molecular biology and genetics. David Wilson tells figuratively, convincingly and popularly about achievements and miscalculations, the victory over polio and the powerlessness of scientists before the common cold, allergies, malaria, the latest drug interferon and much more. His book will be read with great interest not only by doctors and biologists, but also by all those who follow the development of science.