When a neuromodulator slows the reuptake of a neurotransmitter or causes expression of an increased number of receptors on postsynaptic neurons, the effect is called
A. presynaptic potentiation.
B. recruitment.
C. spatial summation.
D. facilitation.
E. temporal summation.
Answer: D
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The appearance of the signs and symptoms of AIDS in an HIV-infected individual generally appear after the virus has had enough time
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