What is anaphylaxis?
A) Anaphylaxis is a normal immune response to an allergen, which is an antigen that triggers an allergic reaction.
B) Anaphylaxis is a condition that results from the production of antibodies directed against normal antigens in the body.
C) Anaphylaxis is an inadequate immune responses due to problems with embryonic development of lymphoid organs and tissues, a viral infection, or treatment with or exposure to immunosuppressive agents.
D) Anaphylaxis is an immune response to a circulating antigen that stimulates mast cells throughout the body to release chemicals that prompt the inflammatory response.
E) Anaphylaxis is the excessive immune reaction of antibodies to a virus-infected cell.
Answer: D
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