The protective effects breast milk are known to be associated with______________?
Correct answer: D. IgA antibodies
- A. IgM antibodies
- B. Lysozyme
- C. Mast cells
- D. IgA antibodies
Explanation
Secretory IgA in breast milk survives mucosal conditions and prevents microbes from attaching to the infant’s intestinal and respiratory surfaces. IgM is mainly a large circulating antibody, while lysozyme is an enzyme with antimicrobial activity rather than the principal antibody-mediated protection.
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Practise Immunology
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