title: [An observation on the effect of purified Schick toxin in field use and a comparison of 3 methods for the detection of diphtheria antitoxin levels].
authors.forename: X L
authors.initials: XL
authors.lastname: Xiao
mesh_terms: D004166:Diphtheria Antitoxin / Q000032:analysis*; D004167:Diphtheria Toxin; D006386:Hemagglutination Tests / Q000379:methods; D006801:Humans
chemical_list: D004166:Diphtheria Antitoxin; D004167:Diphtheria Toxin