What are some examples of type IV hypersensitivities seen in

What are some examples of type IV hypersensitivities seen in humans? poison ivy/oak multiple sclerosis tuberculosis all of the above What antibody is the major player in type I hypersensitivities? IgA IgD IgE none of the above Serum disease can be caused by therapeutic antibodies which patients receive multiple times. The body perceives these antibodies as foreign and generates antibodies against them i.e. antibodies against antibodies. This results in formation of antibody complexes that affect the vasculature causing vasculitis. What type of hypersensitivity is this? type I type II type III none of the above

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