Francoise Barre-Sinoussi of France reacts after receiving the 2008 Nobel Prize in Medicine at the Concert Hall in Stockholm December 10, 2008. The medicine prize was given to three researchers, with Barre-Sinoussi and Luc Montagnier of France awarded one half for their discovery of the "human immunodeficiency virus" and Harold zur Hausen of Germany awarded one half for his discovery of "human papilloma viruses causing cervical cancer". REUTERS/Bob Strong (SWEDEN)