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:
- The sensitization stage is asymptomatic and leads to atopic immune response, that is effect stage,
Explanation: | Type I | IgE | | Type II | IgG and IgM | | Type III | IgG, IgM, and sometimes IgA | | Type IV | T-cell-mediated |
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