1.

Type I hypersensitivity is mediated by1. IgG2. IgE3. IgM4. IgA

Answer» Correct Answer - Option 2 : IgE

Concept:

  • IgE mediates type I hypersensitivity.
  • It is also known as an immediate reaction.
  • It involves an exaggerated IgE immune response. The allergic response includes asthma, dermatitis, and rhinitis. The allergic response to foreign allergens includes anaphylaxis, urticaria, and drug allergies.
  • Type I hypersensitivity occurs as a response to antigen. The response includes two stages:
    • Sensitization
    • Effect
  • The sensitization stage is asymptomatic and leads to atopic immune response, that is effect stage,

Explanation:

Type IIgE
Type IIIgG and IgM
Type IIIIgG, IgM, and sometimes IgA
Type IVT-cell-mediated


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