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Tuberculosis: Definition and Aetiology
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Tuberculosis: Definition and Aetiology

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Questions and Answers

What is the primary function of the lipid capsule in tubercle bacilli?

  • Responsible for cell-mediated immune response
  • Produces toxins that cause tissue damage
  • Attracts neutrophils in the early response
  • Attracts histiocytes and converts them into epithelioid cells (correct)

    • What is the mechanism of tissue damage in tuberculosis?

  • Hypersensitivity reaction to tuberculoprotein (correct)
  • Toxin production by the tubercle bacillus
  • Direct invasion of tissues by the bacterium
  • Immune response to the lipid capsule

    • Which of the following is NOT a predisposing factor for tuberculosis?

  • Area of high standard of living (correct)
  • Low body resistance due to debilitating diseases
  • Overcrowding
  • Handling of infective materials

    • What is the primary route of human infection with tuberculosis?

    <p>Inhalation of infected droplets</p> Signup and view all the answers

    What type of stain is used to demonstrate tubercle bacilli?

    <p>Ziehl-Neelsen stain</p> Signup and view all the answers

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