Which of the following is the first class of antibodies secreted after an antigen arrives?
A) IgD
B) IgM
C) IgA
D) IgE
E) IgG

Question

Quizplus · Accepted Answer

IgM is the first class of antibodies to be produced in response to an initial exposure to an antigen. It plays a crucial role in the primary immune response before other classes of antibodies, such as IgG, are produced in larger amounts during the secondary immune response.

Which of the Following Is the First Class of Antibodies