The basis of an allergic reaction is the release of ____________ from basophils in the blood and mast cells in the connective tissue.

Question

Quizplus · Accepted Answer

Histamine is a chemical mediator that is released from basophils and mast cells in response to an allergen. Histamine causes inflammation, vasodilation, and smooth muscle contraction, which leads to the symptoms of an allergic reaction.

The Basis of an Allergic Reaction Is the Release of ____________