[Smear-positive and culture-negative results in detecting acid-fast bacilli in the sputum and their clinical significance].
D006801:Humans; D009169:Mycobacterium tuberculosis / Q000166:cytology / Q000302:isolation & purification*; D013183:Sputum / Q000382:microbiology*; D014397:Tuberculosis, Pulmonary / Q000382:microbiology*