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What Will Be the Immediate Action of Allergen When It

Question 40

Multiple Choice

What will be the immediate action of allergen when it enters the body for a second time?


A) degranulation
B) bonding of allergen to adjacent IgE binding sites on mast cells and basophils
C) binding of IgE by the Fc region to mast cells and basophils
D) Histamine acts on smooth muscle.
E) Prostaglandins cause vasodilation and increased vascular permeability.

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