Which class of antibodies is the first released by B cells during a primary immune response?

Question

Quizplus · Accepted Answer

IgM is the first class of antibodies released by B cells during a primary immune response. It is a pentameric antibody that serves as an important component of the innate immune response by neutralizing pathogens and activating complement. Other antibody classes (IgG, IgD, IgA, IgE) are produced later in the immune response.

Which Class of Antibodies Is the First Released by B