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Antihistamine treatment reduces: A) MHC presentation by macrophages B) blood vessel dilation C) phagocytosis of antigens...

Antihistamine treatment reduces:

A) MHC presentation by macrophages

B) blood vessel dilation

C) phagocytosis of antigens

D) the secondary immune response

Science   Anatomy-And-Physiology   
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Answer #1

Answer ; B) blood vessel dilation.

Reason; Histamine plays its important role in the human body in the part of immunology, when it gets infused into individual's circulation it causes their blood vessels to dialate and reduce the blood pressure peak, But on the other hand, the Antihistamine do's the opposite mechanism in the blood vessels to acheive their targeted goal in the individual's physiology. hence the above mentioned option is the actual result of these treatment. Other options are not relevant function of the given treatment.

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