Three tuberculin syringes in glass tubes, Europe, 1950-1990
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The condition of being immune, the protection against infectious disease conferred either by the immune response generated by immunisation or previous infection or by other nonimmunologic factors.
A protein extracted from the tuberculosis causing bacterium. It is used in tests to determine if a person has been exposed to the bacteria and is in danger of coming down with the disease.
To make an object free of live bacteria or other micro-organisms. Usually achieved by heat or chemical means.
An instrument used for injecting or withdrawing fluids. The open end of the syringe may be fitted with a hypodermic needle for injection into the bloodstream.
An infectious disease that is caused by a bacterium first identified by Robert Koch in 1882. The disease usually affects the lungs first, and is accompanied by a chronic cough.