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Exam questionKROK 1Medicine ยท 2006

From the nasopharynx of a 5-year-old child it was excreted a microorganism which is identical to Corynebacterium diphtheriae dose according to morphological and biochemical signs. But this microorganism does not produce exotoxin. As a result of what process can this microorganism become toxigenic?

Answer options

  1. Chromosome mutation
  2. Cultivation in the telluric environment
  3. Phage conversion
  4. Passing through the organism of the sensative animals
  5. Growing with antitoxic serum
Correct answer

Phage conversion

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