title: Serogrouping of outer membrane surface antigen of black-pigmented Bacteroides by the immunodiffusion test.
mesh_terms: D000942:Antigens, Bacterial / Q000145:classification; D000954:Antigens, Surface / Q000145:classification; D001439:Bacteroides / Q000145:classification*; D006801:Humans; D005779:Immunodiffusion; D001443:Prevotella melaninogenica / Q000145:classification; D012703:Serotyping
chemical_list: D000942:Antigens, Bacterial; D000954:Antigens, Surface