A 44-year-old man has asthma. His father and brother also suffer from asthma, as does his 15-year-old son
Asthma is an allergic response based on a genetic predisposition. The specific allergen initiated by immunological mechanisms is usually mediated by:
A) Immunoglobulin A (IgA)
B) Immunoglobulin M (IgM)
C) Immunoglobulin G (IgG)
D) Immunoglobulin E (IgE)
Ans: D
Feedback: Atopy refers to allergic reactions characterized by the action of IgE antibodies and a genetic predisposition to allergic reactions. IgG is the most common immunoglobulin and is found in intravascular and intercellular compartments. IgA and IgM are found in mucous secretions.
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