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cnv02 cnv02
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6 years ago
In contrast to agonists, antagonists are drugs that
 
  a. increase the availability of neurotransmitters.
  b. increase the effectiveness of neurotransmitters. c. block receptor sites.
  d. mimic the action of neurotransmitters.
  e. speed up the transmission of neural impulses.
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6 years ago
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