title: Antibodies against hepatitis associated antigen (HAA) in human sera.
mesh_terms: D000906:Antibodies / Q000032:analysis*; D000917:Antibody Formation; D002908:Chronic Disease; D003168:Complement Fixation Tests; D006505:Hepatitis / Q000276:immunology*; D006506:Hepatitis A / Q000276:immunology*; D006511:Hepatitis B Antigens / Q000032:analysis; D006515:Hepatitis B virus; D006801:Humans
chemical_list: D000906:Antibodies; D006511:Hepatitis B Antigens