Immunology Lecture: IgE and Immune Response
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Questions and Answers

What is the result of antigen cross-linking with IgE bound to mast cells and basophils?

  • Complement activation
  • Cytokine release
  • Antibody-dependent cellular cytotoxicity
  • Release of vasoactive mediators (correct)

    • Which type of hypersensitivity is characterized by antibody-mediated cell destruction?

  • Type IV hypersensitivity
  • Type II hypersensitivity (correct)
  • Type I hypersensitivity
  • Type III hypersensitivity

    • What is the outcome of antigen-antibody complex deposition in tissues?

  • Cytokine release and cellular cytotoxicity
  • Vasoactive mediator release
  • Antibody-dependent cellular cytotoxicity
  • Complement activation and inflammatory response (correct)

    • Which of the following is a manifestation of Type I hypersensitivity?

    <p>Hay fever</p> Signup and view all the answers

    What is the mechanism of Type III hypersensitivity?

    <p>Ag-Ab complex deposition and complement activation</p> Signup and view all the answers

    Which type of hypersensitivity is characterized by localized Arthus reaction and systemic lupus erythematosus?

    <p>Type III hypersensitivity</p> Signup and view all the answers

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