________ exists when the immune system does not respond to a particular antigen.
A) Immunity
B) Memory
C) Adaptation
D) Tolerance
E) Versatility
Correct Answer:
Verified
Q80: The attraction or repulsion of certain cells
Q81: Suppressor T cells act to
A) suppress antigens.
B)
Q82: All of the following are characteristics of
Q83: Hormones of the immune system include all
Q84: In passive immunity, the
A) immune system attacks
Q86: Frank was bitten by a rattlesnake and
Q87: _ cells enable the immune system to
Q88: When an antigen is bound to a
Q89: In an experimental situation, a rabbit is
Q90: The end result of the classical and
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