Undated file photo shows Tu Youyou, a pharmacologist with the China Academy of Chinese Medical Sciences, working to make artemisinin, a drug therapy for malaria, in 1980s. 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. Tu won half of the prize for her discoveries concerning a novel therapy against malaria. (Photo: Xinhua/Yang Wumin)
