word count: 230 Text Word count: 3520 Molecular Hepatitis and Hepatitis Viruses Sections, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD. 2 Current address: Gastroenterology,Kanazawa University, Graduate School of Medical Science,Kanazawa,Japan Corresponding author: Dr. Suzanne U. Emerson, Molecular Hepatitis...