title: Immunity to diphtheria in an urban population.
mesh_terms: D002641:Chicago; D002908:Chronic Disease; D004165:Diphtheria / Q000276:immunology*; D004166:Diphtheria Antitoxin; D004168:Diphtheria Toxoid; D005098:Exotoxins; D006801:Humans; D007109:Immunity; D011446:Prospective Studies; D011863:Radioimmunoassay; D013742:Tetanus / Q000276:immunology; D014505:Urban Population
chemical_list: D004166:Diphtheria Antitoxin; D004168:Diphtheria Toxoid; D005098:Exotoxins