title: Comparison of soluble antigens of a species of Bacteroides and its protoplasts.
mesh_terms: D000941:Antigens / Q000032:analysis*; D001439:Bacteroides / Q000187:drug effects / Q000276:immunology*; D002473:Cell Wall / Q000276:immunology; D004589:Electrophoresis, Disc; D005779:Immunodiffusion; D010400:Penicillin G / Q000494:pharmacology; D011523:Protoplasts / Q000276:immunology
chemical_list: D000941:Antigens; D010400:Penicillin G