The predominant immunoglobulin in saliva is_______________?
Correct answer: A. IgA
- A. IgA
- B. IgD
- C. IgE
- D. IgG
Explanation
Secretory IgA is the predominant immunoglobulin in saliva and other mucosal secretions, where it prevents microbial attachment and neutralizes pathogens. IgG is abundant in serum but is not the main salivary antibody.
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