Which of the following statements explains why the secondary immune response is both stronger and faster than the primary immune response?

+3 votes

 

Plasma cells were produced during the first exposure to the antigen.

Memory cells were produced during the first exposure to the antigen.

CD4+ cells remain activated after they are exposed to the antigen in the primary response.

Antibodies produced during the first exposure remain in the blood for decades and can take part in the secondary response.

 

asked Jan 1, 2013 in Biology by anonymous
    

1 Answer

+1 vote

 

Memory cells were produced during the first exposure to the antigen.

 

answered Jan 1, 2013 by Panda ~Expert~ (1,557 points)



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