Antihistamine Treatment Reduces

Question

Antihistamine treatment reduces
A)blood vessel dilation.
B)phagocytosis of antigens.
C)MHC presentation by macrophages.
D)the secondary immune response.
E)clonal selection by antigens.

Accepted Answer

Antihistamines block the action of histamine, which is a chemical mediator involved in blood vessel dilation, leading to the reduction of this response.