Professor Herman Waldmann (FRCPath, MRCP, FRS) was educated in Cambridge and the London Hospital. He was the Head of the Sir William Dunn School of Pathology from 1994 to 2012. His research interests lie in the field of Immunological Tolerance where he is attempting to understand why the immune system can react to foreign microbes and yet does not usually react to self. If one could reprogramme the immune system to become tolerant to foreign tissue grafts or to any substance it was reacting to, then this would obviate the need for long-term treatment with the immunosuppressive drugs. His non-research interests are in family, food, friends and paradise-style travel.