During a primary response to antigen exposure,all of the following occur except A)the antigen must activate appropriate B cells. B)B cells may take time to develop into plasma cells and memory cells. C)antibody levels do not peak until 1 to 2 weeks after the initial exposure. D)neutrophils invade the surrounding areas,releasing chemotactic substances. E)the first immunoglobulins to appear in circulation are of the IgM type.

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Quizplus · Accepted Answer

Neutrophils are not directly involved in the primary response to antigen exposure. Their role is more prominent during the secondary response, where they provide a rapid and effective response against pathogens. During the primary response, dendritic cells and macrophages play a crucial role in presenting antigens to T cells, which activate B cells to produce antibodies. This process takes some time, and the antibody levels do not peak until about 1-2 weeks after the initial exposure. The first immunoglobulins to appear in circulation are of the IgM type, which later switch to IgG production.

During a Primary Response to Antigen Exposure,all of the Following