All of the following are true of the primary response of humoral immunity 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.

Question

Quizplus · Accepted Answer

The primary response of humoral immunity is not delayed by the memory cell stage. Memory cells are formed after the initial exposure and play a critical role in the secondary response, which is faster and stronger than the primary response. The primary response involves the activation and differentiation of antigen-specific B cells, which then produce antibodies as plasma cells. The antibodies in circulation gradually increase over time and peak about 1 to 2 weeks after the initial exposure.

All of the Following Are True of the Primary Response