title: Antigens of Leptotrichia buccalis II. Their reaction with complement fixing IgM in human sera.
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial; D003168:Complement Fixation Tests; D006088:Gram-Negative Aerobic Bacteria / Q000276:immunology*; D006168:Guinea Pigs / Q000276:immunology; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis*; D010510:Periodontal Diseases / Q000276:immunology*; D012756:Sheep / Q000276:immunology
chemical_list: D000942:Antigens, Bacterial; D007075:Immunoglobulin M