Which antibody is detected in the circulation to indicate a typical primary immune response?
A) IgG
B) IgM
C) IgA
D) IgE

Question

Quizplus · Accepted Answer

IgM is the first antibody produced in response to a primary immune response. It is a large pentamer that is released by plasma cells and offers primary defense against pathogens. It is the largest immunoglobulin and binds with high avidity to antigen, making it important in agglutination reactions, complement activation, and opsonization. Other antibodies like IgG, IgA, IgE, etc. are produced as a secondary response or during subsequent exposure to the same pathogen.

Which Antibody Is Detected in the Circulation to Indicate a Typical