Multiple choice

The most abundant serum immunoglobulin in the human body is?

  1. IgG

  2. IgA

  3. IgE

  4. IgM
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

IgG is the most abundant immunoglobulin in human serum, accounting for approximately 75 percent of all antibodies. It is the only class of antibody capable of crossing the placenta.

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