title: Niacin test for differentiation of Mycobacterium tuberculosis var. hominis from other acid-fast bacilli. XI. Clinical and bacteriological examination of the 2 cases with pulmonary tuberculosis which had excreted niacin test negative mycobacterium tuberculosis var. hominis for a long period. II. Some properties of the acid-fast bacilli detected.
mesh_terms: D001407:Bacillus; D003470:Culture Media; D004789:Enzyme Activation; D009169:Mycobacterium tuberculosis; D009539:Nicotinic Acids; D014397:Tuberculosis, Pulmonary
chemical_list: D003470:Culture Media; D009539:Nicotinic Acids