title: A method of characterizing tuberculins.
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D008722:Methods; D009161:Mycobacterium / Q000276:immunology; D009164:Mycobacterium Infections / Q000276:immunology; D009169:Mycobacterium tuberculosis / Q000276:immunology; D014373:Tuberculin / Q000008:administration & dosage / Q000592:standards*; D014374:Tuberculin Test
chemical_list: D014373:Tuberculin