All of the following are key mediators of immediate hypersensitivity reactions EXCEPT:
A)Mast cells
B)Basophils
C)IgE
D)Macrophages
E)TH2 cells

Question

Quizplus · Accepted Answer

The main cellular mediators of immediate hypersensitivity reactions are mast cells,basophils,and eosinophils.IgE antibody plays a major role in sensitizing these cellular mediators for subsequent activation.Activation of TH2 cells is required for appropriate release of cytokines,such as interleukin (IL)-4 and IL-13,which stimulate IgE class switching in B cells.In contrast,macrophages are effector cells in delayed-type hypersensitivity reactions.

All of the Following Are Key Mediators of Immediate Hypersensitivity