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A 20-year old gardener presents to his family physician for treatment of what he

ID: 52508 • Letter: A

Question

A 20-year old gardener presents to his family physician for treatment of what he described as posion ivy. The patient hand and arm appear red and are covered with oozing blisters and crusts. Which of the following best describes the pathogenesis of this skin lesions?

1. Cytotoxic antibody production

2. Delayed-type hypersensitivity

3. Deposition of antigluten antibodies

4. Deposition of circulating immune complexes

5. Ig-mediated mast cell degranulation

I tried 4&5 and both are wrong....please help!

Explanation / Answer

2. Delayed-type hypersensitivity

The inflammatory response initiated by ivy poison is a type of delayed hepersensitivity reaction, which is mediated by mononuclear leukocites.

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