Moderate

First released immunoglobulin after primary immunization_______________?

Correct answer: D. IgM

  • A. IgD
  • B. IgE
  • C. IgG
  • D. IgM

Explanation

IgM is the first antibody produced during a primary immune response because naïve B cells initially secrete it before class switching to IgG, IgA or IgE.

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