title: Further developments of International Biological Standards for anaerobic immunological substances.
mesh_terms: D000992:Antitoxins / Q000592:standards*; D003013:Clostridium; D003016:Clostridium perfringens; D005738:Gas Gangrene; D013745:Tetanus Toxoid / Q000592:standards*; D014944:World Health Organization
chemical_list: D000992:Antitoxins; D013745:Tetanus Toxoid