title: Field trial on frozen and thawed tetanus toxoid.
mesh_terms: D000328:Adult; D000818:Animals; D004355:Drug Stability; D005615:Freezing; D006168:Guinea Pigs; D006801:Humans; D007114:Immunization; D013743:Tetanus Antitoxin / Q000032:analysis*; D013745:Tetanus Toxoid
chemical_list: D013743:Tetanus Antitoxin; D013745:Tetanus Toxoid