Multiple Choice
A vaccine is effective because ________.
A) B-lymphocytes are unable to mount an immune response the first time they are exposed to a new pathogen
B) the secondary response of the adaptive immunity is faster and more efficient the primary response
C) the vaccine contains the lymphocytes necessary to fight infection
D) the vaccine contains the antibodies necessary to fight infection
Correct Answer:
Verified
Correct Answer:
Verified
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