IgE is responsible for which type of hypersensitivity?

Options :
  1. Type I hypersensitivity
  2. Type II hypersensitivity
  3. Type III hypersensitivity
  4. Type IV hypersensitivity
Answer and Explanation :-

Answer: Option 1

Explanation:

In type 1 hypersensitivity, an antigen is presented to CD4+ Th2 cells specific to the antigen that stimulate B-cell production of IgE antibodies also specific to the antigen. The difference between a normal infectious immune response and a type 1 hypersensitivity response is that in type I hypersensitivity the antibody is IgE instead of IgA, IgG, or IgM.

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