Host immune response · USMLE Step 1

Which immunoglobulin is predominantly produced during a secondary immune response?

  1. IgM
  2. IgD
  3. IgE
  4. IgG
Show answer and explanation

Correct answer: IgG

Memory B cells rapidly produce IgG during secondary responses. IgG is more specific and produced in greater quantity than IgM.

Difficulty: Medium Question 4 of 20

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