title: Historical perspective--viral hepatitis.
mesh_terms: D000818:Animals; D000882:Haplorhini; D006506:Hepatitis A / Q000266:history* / Q000276:immunology; D006511:Hepatitis B Antigens; D049673:History, 20th Century; D006801:Humans; D014481:United States
chemical_list: D006511:Hepatitis B Antigens