Jing-hsiung James Ou is the Professor and Fletcher Jones Foundation Chair of the Department of Molecular Microbiology & Immunology at the University of Southern California Keck School of Medicine. He received his B.S. in Zoology from National Taiwan University in 1976 and earned his Ph.D. in Molecular Virology at the California Institute of Technology in 1982. The research of his laboratory is centered on hepatitis B virus (HBV), hepatitis C virus (HCV), and liver cancer. He is particularly interested in understanding how the two viruses interact with their host cells, how they invade host immunity to establish persistent infection, and how they cause liver diseases, including hepatocellular carcinoma.