41. Immune System
Adaptive Immunity
Multiple Choice
Multiple ChoiceOnce you have been exposed to an antigen, you develop immunity against the same antigen because __________.
A
antibodies against the disease are constantly circulating in your blood
B
your innate defenses are strengthened
C
B cells are stimulated to quickly engulf invaders
D
antigens are altered so that the invaders can no longer attack your tissues
E
certain lymphocytes enable the rapid formation of the proper antibodies
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