title: Sub-specificities of hepatitis Bs antigen.
abstract: A preliminary survey of HBsAg subtypes shows that ayw is the most common subtype in Pakistan. adw. was detected in one blood donor and ayr in a Baluchi female with acute viral hepatitis.
mesh_terms: D000208:Acute Disease; D001782:Blood Donors; D002908:Chronic Disease; D005260:Female; D006514:Hepatitis B Surface Antigens / Q000145:classification*; D006801:Humans; D008107:Liver Diseases / Q000276:immunology; D010154:Pakistan
chemical_list: D006514:Hepatitis B Surface Antigens