Harald zur Hausen (born March 11, 1936 in Gelsenkirchen, Province of Westphalia) is a German virologist and professor emeritus. He has done research on cancer of the cervix, where he discovered the role of papilloma viruses, for which he received the Nobel Prize in Physiology or Medicine 2008. Zur Hausen’s specific field of research is the study of oncoviruses. In 1976, he published the hypothesis that human papilloma virus plays an important role in the cause of cervical cancer. Together with his collaborators, he then identified HPV16 and HPV18 in cervical cancers in 1983-4. This research directly made possible the development of a vaccine which was introduced in 2006. See also HPV vaccine. He is also credited with discovery of the virus causing genital warts (HPV 6) and a monkey lymphotropic polyomavirus that is a close relative to a recently discovered human Merkel cell polyomavirus, as well as techniques to immortalize cells with Epstein-Barr virus and to induce replication of the virus using phorbol esters. His work on papillomaviruses and cervical cancer received a great deal of scientific criticism on initial unveiling but subsequently was confirmed and extended to other high-risk papillomaviruses. He shared the 2008 Nobel Prize in Medicine with Luc Montagnier and Françoise Barré-Sinoussi, who discovered the human immunodeficiency virus.