KROK 1 2012 – Question 183 · KROK (Medicine) · Microbiology, Virology, and Immunology
A bacteriological laboratory received sputum sample of a patient suffering from tuberculosis. Bacterioscopic examination of smears and detection of tuberculosis bacillus can be realized by one of enrichment methods that involves processing of sputum only with solution of caustic soda. What is this method called?
- A. Neutralization
- B. Inactivation
- C. Flotation
- D. Filtration
- E. Homogenization
Hint
Think about the physical effect of alkali on thick sputum mucus and about what it does to the accompanying non-acid-fast flora before smears are made.
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