File photo taken on Sept. 23, 2011 shows Chinese Pharmacologist Tu Youyou posing with her trophy after winning the Lasker Award, a prestigious U.S. award, in New York, the United States. China's Tu Youyou, Irish-born William Campbell, and Japan's Satoshi Omura jointly won the 2015 Nobel Prize for Physiology or Medicine, the Nobel Assembly at Sweden's Karolinska Institute announced on Monday.(Photo: Xinhua/Wang Chengyun)
