title: Subtypes of hepatitis B surface antigen in chronic liver disease.
mesh_terms: D000293:Adolescent; D000328:Adult; D002908:Chronic Disease; D006514:Hepatitis B Surface Antigens / Q000145:classification* / Q000276:immunology; D006801:Humans; D008107:Liver Diseases / Q000276:immunology*
chemical_list: D006514:Hepatitis B Surface Antigens