What Will Be the Immediate Action of an Allergen When

question 37

Multiple Choice

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

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

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