title: Value of dual testing with PPD-S and PPD-B.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007194:India; D007223:Infant; D008297:Male; D008875:Middle Aged; D014373:Tuberculin / Q000276:immunology; D014374:Tuberculin Test; D014376:Tuberculosis / Q000175:diagnosis*
chemical_list: D014373:Tuberculin