title: Significance of the Lf content of diphtheria toxoid as a guide to its immunogenic value in DPT vaccine.
mesh_terms: D000818:Animals; D004168:Diphtheria Toxoid / Q000032:analysis* / Q000276:immunology*; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D004338:Drug Combinations / Q000276:immunology; D005428:Flocculation Tests; D006168:Guinea Pigs; D010567:Pertussis Vaccine / Q000276:immunology*; D013745:Tetanus Toxoid / Q000276:immunology*
chemical_list: D004168:Diphtheria Toxoid; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D004338:Drug Combinations; D010567:Pertussis Vaccine; D013745:Tetanus Toxoid