title: Gram-stain neutrality of Mycobacterium tuberculosis.
abstract: Although the Gram stain is a frequently used technique, its application to mycobacterial identification is confusing. A recent clinical experience is presented to demonstrate the gram-neutrality of the air-dried bacillus.
mesh_terms: D000368:Aged; D001431:Bacteriological Techniques; D006801:Humans; D008297:Male; D009169:Mycobacterium tuberculosis; D013194:Staining and Labeling / Q000379:methods*; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis* / Q000382:microbiology