Multiple choice

Which of the following statements does not characterize immunoglobulin in fetal and neonatal infants?

  1. Maternal IgG is placentally transferred from 32 to 40 weeks of gestation.

  2. IgM is the first Ig to be made in the fetus.

  3. Much of the maternal IgG is catabolized in a normal infant by 12-24 weeks of life.

  4. Breast milk IgA is absorbed by the infant's small intestine for up to 6 months of life.

  5. Membrane-bound immunoglobulins are associated with two accessory peptides.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Human infants do not absorb oral IgA from colostrum or milk, unlike lamb.

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