title: The detection of the factor lowering the immunogenicity of toxoid of Clostridium perfringens type A.
mesh_terms: D000818:Animals; D000992:Antitoxins / Q000032:analysis; D002848:Chromatography, DEAE-Cellulose; D003016:Clostridium perfringens / Q000276:immunology*; D006168:Guinea Pigs; D007114:Immunization; D014121:Toxoids / Q000276:immunology*
chemical_list: D000992:Antitoxins; D014121:Toxoids