title: Letter: Detection of HBAg by passive haemagglutination.
mesh_terms: D000208:Acute Disease; D000818:Animals; D004912:Erythrocytes / Q000276:immunology; D005189:False Positive Reactions; D006386:Hemagglutination Tests; D006509:Hepatitis B / Q000276:immunology; D006510:Hepatitis B Antibodies; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D012756:Sheep / Q000276:immunology
chemical_list: D006510:Hepatitis B Antibodies; D006511:Hepatitis B Antigens