it was frightful ... having uniformly negative results for two or three years at that stage in one's career was extremely alarming. Anthony Epstein , now
Professor of Pathology at the University of Bristol. and his colleague, Yvonne Barr , succeeded in discovering the first human cancer virus. In conversation with Professor Lewis Wolpert of the Middlesex Hospital Medical School, London, he reflects on how they did it.
Producer ALISON RICHARDS