KROK 1 2007 – Question 45 · KROK (Medicine) · Microbiology, Virology, and Immunology
From pharynx of a child with suspected diphtheria a pure culture of microorganisms was isolated. Their morphological, tinctorial, cultural and biochemical properties appeared to be typical for diphtheria causative agents. What study should be conducted in order to draw a conclusion that this is a pathogenic diphtheria bacillus?
- A. Estimation of cystinous activity
- B. Estimation of proteolytic properties
- C. Estimation of ability to decompose starch
- D. Estimation of toxigenic properties
- E. Estimation of urease activity
Hint
Think about what actually causes the clinical disease in diphtheria and what separates dangerous strains from harmless look-alike corynebacteria in the throat.
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