Type IV hypersensitivity involves _____.
A)B cells
B)complement
C)immune complexes
D)TH1 cells

Question

Quizplus · Accepted Answer

Type IV hypersensitivity, also called delayed-type hypersensitivity (DTH), involves activation of TH1 cells which release cytokines that lead to recruitment and activation of macrophages and other inflammatory cells. This type of hypersensitivity reaction is involved in cell-mediated immune responses against intracellular pathogens and is also responsible for delayed allergic reactions, such as poison ivy rash.

Type IV Hypersensitivity Involves _____