Please select all of the correct answers in this question to test your understanding of Type 4 hypersensitivity. Check All That Apply Type 4 hypersensitivity is also referred to as delayed hypersensitivity. The severity of the reaction depends upon whether IgG, IgM, or IgE are involved. Type 4 hypersensitivity is mediated by T cells and the effector cells that they recruit. Type 4 hypersensitivity is most appropriately treated with antihistamines. Type 4 hypersensitivity may result from mismatched blood transfusions.
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