KROK 1 Stomatology 2014 – Question 157 · KROK (Dentistry)
Diphtheria exotoxin had been treated with 0.3-0.4% formalin and kept in a thermostat for 30 days at a temperature of 40°C. What preparation was obtained as a result of these manipulations?
- A. Diagnostic serum
- B. Diagnosticum
- C. Antitoxin
- D. Therapeutic serum
- E. Anatoxin
Hint
Think about what formalin and warmth do to a toxin's toxicity and to its ability to stimulate antibody production.
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