All of the following are true of the primary response to antigen exposure except that

A) it depends on antigen triggering the appropriate B cell.
B) it requires B cell differentiation into plasma cells.
C) it is delayed by the memory cell stage.
D) circulating antibodies undergo a gradual, sustained rise.
E) it peaks 1 to 2 weeks after the initial exposure.


Answer: C

Anatomy & Physiology

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