The 2015 Nobel Prize laureate for Physiology or Medicine William C. Campbell (L) and Tu Youyou attend a press conference at Karolinska Institute in Stockholm, capital of Sweden, Dec. 6, 2015. Eighty-four-year-old Tu Youyou arrived in Sweden on Friday to collect China's first Nobel Prize in medicine for creating an anti-malarial drug that saved millions of people across the world. (Xinhua/Ye Pingfan) |
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