IMMUNOLOGY ONLY Mycobacterium tuberculosis is an intracellular bacterial pathogen. An individual’s exposure to this pathogen can be tested...

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Biology

IMMUNOLOGY ONLY

  1. Mycobacterium tuberculosis is anintracellular bacterial pathogen. An individual’s exposure to thispathogen can be tested by injecting it into the skin. What type ofreaction would you expect in an individual who had been exposed toM. tuberculosis? What is the principle behind this test?

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For testing tuberculosis infection a purified protein derivative called tuberculin is extracted from Mtuberculosis culture and then injected onto the skin This protein causes Type IV hypersensitivity reaction or delayed type hypersensitivity    See Answer
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