Difficulty: Medium
Average Score: 84%
Simulated
Passage / Scenario
Counseling a new mother about breast milk immunologic properties.An nurse is counseling a new mother about the immunologic properties of breast milk. The nurse emphasizes that breast milk is the main source of which specific immunoglobulin?
Correct answer
C
Rationale
IgA in breast milk, especially colostrum, protects the infant's gut mucosa, unlike IgG, IgE, or IgM which have lesser roles.