tuberculin

/təˈbɜːrkjəlɪn/
noun
  1. A substance made from the bacteria that cause tuberculosis, used in medical tests to see if a person has been exposed to the disease.
    • The nurse explained that the tuberculin test would show a reaction if the person had been infected.
    • Tuberculin is derived from the bacteria that cause tuberculosis.
    • The doctor injected a small amount of tuberculin under the patient's skin to check for tuberculosis.
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