Immunoglobin, Which is produced first by the fetus in response to infection_______________?
Correct answer: C. IgM
- A. IgG
- B. IgA
- C. IgM
- D. IgD
Explanation
IgM is the first immunoglobulin produced by the fetus and is the earliest antibody made during a primary immune response. Maternal IgG can cross the placenta, but it is not produced by the fetus.
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