Niacin-negative Mycobacterium tuberculosis.
D000995:Antitubercular Agents / Q000494:pharmacology* / Q000627:therapeutic use; D004352:Drug Resistance, Microbial; D004977:Ethambutol / Q000627:therapeutic use; D006801:Humans; D008826:Microbial Sensitivity Tests; D009169:Mycobacterium tuberculosis / Q000187:drug effects*; D009539:Nicotinic Acids; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy*
D000995:Antitubercular Agents; D009539:Nicotinic Acids; D004977:Ethambutol