title: Estimation of antibody level against diphtheria in adult population by indirect haemagglutination test.
mesh_terms: D000328:Adult; D004165:Diphtheria / Q000097:blood / Q000276:immunology*; D004166:Diphtheria Antitoxin / Q000097:blood*; D006386:Hemagglutination Tests; D006801:Humans; D007194:India; D012698:Serologic Tests
chemical_list: D004166:Diphtheria Antitoxin