title: Detection of tubercle bacilli in sputum smear by floatation method--a reappraisal.
mesh_terms: D001431:Bacteriological Techniques; D006801:Humans; D009169:Mycobacterium tuberculosis / Q000302:isolation & purification; D013183:Sputum / Q000382:microbiology*; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis* / Q000382:microbiology