Which Hypersensitivity Disorder is the Result of Cell-Mediated Response

Question

Which hypersensitivity disorder is the result of cell-mediated response?
A) type I
B) type II
C) type III
D) type IV
E) both type I and II

Accepted Answer

Type IV hypersensitivity disorder is the result of a cell-mediated response, specifically involving T lymphocytes. This type of hypersensitivity is delayed and can result in tissue damage. Examples of type IV hypersensitivity include contact dermatitis and tuberculin reactions. Type I, II, and III hypersensitivities involve different mechanisms and are not cell-mediated responses.