How is the type of neurochemical used by a particular neuron determined?
A. The postsynaptic (target) cell determines which neurochemical the presynaptic cell will release.
B. The genes of the presynaptic cell determine which neurochemical the cell will use.
C. The neurotrophins released by the postsynaptic (target) cell determine the neurochemical the presynaptic cell will use.
D. Guidepost cells determine the type of neurochemical used in particular systems.
Answer: A
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