Question

In a primary immune response to an antigen, which of the following is a pentameric immunoglobulin?

• A. IgG
• B. IgM
• C. IgA
• D. Ige

Answer 1

Answer:

B. IgM

• IgM is the pentameric immunoglobulin in a primary immune response to an antigen.

• It is made up of five identical monomeric units, and its primary function is to bind antigens and activate the complement system, which is important in the initiation of the primary immune response.