Professor Harald zur Hausen joint Nobel Prize winner in Physiology or Medicine 2008, poses in a laboratory at the cancer research center of the university in Heidelberg October 6, 2008. Germany's Harald zur Hausen and French researchers Francoise Barre-Sinoussi and Luc Montagnier were jointly awarded the 2008 Nobel Prize in Physiology or Medicine on Monday. Hausen won "for his discovery of human papilloma viruses causing cervical cancer" and Barre-Sinoussi and Montagnier "for their discovery of human immunodeficiency virus". REUTERS/Alex Grimm (GERMANY)