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The following statement about histamine is not
correct:
A. It is the sole mediator of immediate hypersensitivity reaction
B. It plays no role in delayed hypersensitivity
reaction
C. It serves as a neurotransmitter in the brain
D. All types of histamine receptors are G
protein coupled receptors
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1 Answer

A. It is the sole mediator of immediate hypersensitivity reaction
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