Types and Causes of Primary and Secondary Immunodeficiency, Hypersensitivity Reactions
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Questions and Answers

What is the characteristic feature of Type III hypersensitivity reactions?

  • Immune complex deposition and tissue damage (correct)
  • Inhibition of neuromuscular transmission
  • Activation of CD4+ T cells
  • Antibody-mediated cellular dysfunction

    • Which disorder is an example of Type II hypersensitivity?

  • Myasthenia gravis
  • Delayed-type hypersensitivity (DTH)
  • Graves disease
  • Transfusion reactions (correct)

    • What is the main effector cytokine secreted by TH1 cells in T cell-mediated hypersensitivity reactions?

  • Interleukin-17 (IL-17)
  • Interferon-gamma (IFN-γ) (correct)
  • Tumor necrosis factor (TNF)
  • Interleukin-4 (IL-4)

    • Which type of hypersensitivity involves antibodies stimulating thyroid epithelial cells to secrete thyroid hormones?

    <p>Type II hypersensitivity (D)</p> Signup and view all the answers

    What is the primary characteristic of delayed-type hypersensitivity (DTH) reaction?

    <p>Detectable cutaneous reaction within 24 to 48 hours (D)</p> Signup and view all the answers

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