title: The tuberculin skin test--does it mean what we think?
mesh_terms: D005188:False Negative Reactions; D006801:Humans; D009161:Mycobacterium / Q000302:isolation & purification*; D013183:Sputum / Q000382:microbiology*; D013501:Surface-Active Agents / Q000494:pharmacology; D014373:Tuberculin / Q000592:standards; D014374:Tuberculin Test / Q000592:standards*
chemical_list: D013501:Surface-Active Agents; D014373:Tuberculin