Mycobacterium tuberculosis is differentiated from other atypical mycobacteria by______________?
Correct answer: A. Niacin test
- A. Niacin test
- B. AFB staining
- C. Pas staining
- D. None of the above
Explanation
Mycobacterium tuberculosis is characteristically niacin-positive, whereas most atypical mycobacteria are niacin-negative. Acid-fast staining only identifies mycobacteria generally and does not distinguish M. tuberculosis from atypical species.
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