Which of the following would up-regulate postsynaptic β1 adrenergic receptors?
A) Daily use of amphetamine that causes norepinephrine to be released.
B) A disease that causes an increase in the activity of norepinephrine neurons.
C) Daily use of isoproterenol, a β1 receptor agonist.
D) Daily use of formoterol, a β2 receptor agonist.
E) Daily use of propranolol, a β1 receptor antagonist.
Correct Answer:
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