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5 votes
Which antibody isotype is associated with mucosal immunity?

A. IgG
B. IgM
C. IgA
D. IgE
E. IgD

1 Answer

4 votes

Final answer:

IgA is the antibody isotype associated with mucosal immunity. It is abundantly found in various bodily secretions and plays a critical role in neutralizing pathogens and protecting the mucosa.

Step-by-step explanation:

The antibody isotype associated with mucosal immunity is IgA.

IgA is abundantly found in tears, saliva, breast milk, and secretions of the gastrointestinal and respiratory tracts. It plays a crucial role in preventing infection of the mucosa by binding and neutralizing pathogens. Secretory IgA, which is assembled in a dimeric form, traps pathogens in mucus for later elimination from the body.

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