title: Four cases of periarteritis nodosa associated with persistant Australia antigen.
mesh_terms: D000328:Adult; D002353:Carrier State; D003168:Complement Fixation Tests; D005260:Female; D006386:Hemagglutination Tests; D006509:Hepatitis B / Q000150:complications; D006511:Hepatitis B Antigens / Q000032:analysis; D006515:Hepatitis B virus / Q000276:immunology*; D006801:Humans; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D008297:Male; D008875:Middle Aged; D010488:Polyarteritis Nodosa / Q000209:etiology / Q000276:immunology*
chemical_list: D006511:Hepatitis B Antigens