Nobel prize for medicine: US duo Ambros and Ruvkun win for microRNA discovery Reuters.comNobel Prize in medicine goes to two American biologists for work on the discovery of microRNA CNNNobel Prize in Physiology or Medicine Is Awarded to Victor Ambros and Gary Ruvkun The New York TimesNobel Prize in medicine honors 2 scientists for their discovery of microRNA The Associated PressTwo Massachusetts professors awarded Nobel Prize in medicine The Boston Globe