A process characteristic of the primary immune response is
A) decrease in immunoglobulin G
B) increase in immunoglobulin E
C) decrease in immunoglobulin A
D) increase in immunoglobulin M
E) decrease in immunoglobulin D

Question

Quizplus · Accepted Answer

During the primary immune response, there is an increase in immunoglobulin M (IgM) production. IgM is the first antibody produced in response to an antigen, and its levels rise during the primary response before being replaced by immunoglobulin G (IgG) during the secondary response. There may also be a slight increase in IgE levels during the primary response, but not to the extent seen with IgM. IgA and IgD may decrease during the primary response, but this is not a major characteristic of the response.

A Process Characteristic of the Primary Immune Response Is