Immunoglobulins that are the first antibody type to be produced and secreted, following initial exposure to an antigen, are the ________ antibodies.
A) IgE
B) IgG
C) IgM
D) IgD
E) IgA

Question

Quizplus · Accepted Answer

IgM antibodies are the first antibody type to be produced and secreted after initial exposure to an antigen. They are produced by B cells in response to the antigens present on pathogens. IgM antibodies are large and pentameric, making them effective at binding multiple antigen molecules at once. Over time, the immune response will switch to producing other antibody classes such as IgG or IgA.

Immunoglobulins That Are the First Antibody Type to Be Produced