Hepatitis B Virus X Protein Modulates Apoptosis in Primary Rat Hepatocytes by Regulating both NFB and the Mitochondrial Permeability Transition Pore Amy J. Clippinger, Tricia L. Gearhart, and Michael J. Bouchard* Graduate Program in Molecular and Cellular Biology and Genetics and Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania ...