Dr. Limin Chen, a professor with Chinese Academy of Medical Sciences (CAMS)/Peking Union Medical College (PUMC) and also an affiliate scientist with the University of Toronto, Canada,now is the director and chief scientific officer of the center for transfusion transmitted infectious diseases, Institute of Blood Transfusion (IBT), CAMS/PUMC, Member of the American Association for Studies of Liver Diseases (AASLD) and Canadian Association for Studies of Liver (CASL). He got his MD, MSc in biochemistry and molecular biology in China, PhD in molecular genetics at the University of Toronto. Dr. Chen obtained his postdoctoral training both at Merck Research Laboratories (West Point, PA) and at the Harvard Medical School (MGH) . Currently Dr. Chen’s research focuses on the virus-host interaction of the transfusion-transmitted viruses, especially on HCV and HBV and emerging vuruses. He pioneered the work on identification of the response signature and proposed a novel mechanism on how HCV/HBV exploits host innate immune response to benefit its persistent infection and resistance to interferon-based therapy.