A substance that is released by basophils and MAST cells that potentiates the effects of histamine causing spasm of the bronchioles is called:
a. Hymenoptera
b. Slow-reacting substance of anaphylaxis
c. Delayed hypersensitivity
d. Angioneurotic edema
b
Rationale: a. Hymenoptera is a classification of insects that includes wasps and bees.
b. Correct.
c. Delayed hypersensitivity is a type of allergic reaction most often resulting in skin rash.
d. Angioneurotic edema is marked edema of the skin, most often affecting the face, neck, and airways.
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