In patients with asthma due to an allergic cause the serum levels of which immunoglobulin increase____________________?
Correct answer: D. IgE
- A. IgD
- B. IgM
- C. IgA
- D. IgE
Explanation
IgE mediates immediate allergic reactions by binding mast cells and basophils; allergen exposure can therefore raise serum IgE. The other listed immunoglobulins are not the characteristic antibody of atopy.
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