The immunoglobulin class that has a dimer form found in mucus, saliva, colostrum, and other body secretions is
A)IgA.
B)IgD.
C)IgE.
D)IgG.
E)IgM.

Question

Quizplus · Accepted Answer

IgA is the immunoglobulin class that has a dimer form found in mucus, saliva, colostrum, and other body secretions. This dimeric form allows for enhanced binding and protection at mucosal surfaces. IgD is primarily found on the surface of B cells and its function is not fully understood. IgE is involved in allergic reactions and defense against certain parasites. IgG is the most abundant immunoglobulin in the blood and plays a role in secondary immune responses. IgM is the first antibody produced in response to an infection and is involved in the primary immune response.

The Immunoglobulin Class That Has a Dimer Form Found in Mucus