Registered Dietitian

Category - Nutrition Care

The primary immunoglobulin in human breast milk is:
  1. Beta lymphocytes
  2. IgM antibody
  3. Iron-binding lactoferrin
  4. Secretory IgA
Explanation
Answer: D - The primary immunoglobulin in human breast milk is secretory IgA, which protects the infant gastrointestinal tract from infection caused by many pathogens. Beta lymphocytes are produced by the bone marrow and provide humoral immunity, while IgM antibody is involved in allergic response to antigens. Iron-binding lactoferrin is a protein which slows the growth of bacteria in the infant gut; its action is secondary to that of secretory IgA.
Was this helpful? Upvote!
Login to contribute your own answer or details

Top questions

Related questions

Most popular on PracticeQuiz