Substrate B is NEURON X Axon terminal of a cholinergic neuron Substrate A Synthesis and packaging Into a vesicle Neurotransmitter break Substrate B Process F down by Enzyme D OProtein E Substrate B transport into the axon terminal Receptor C Substrate B is recycled to produce neurotransmitter Acetate Enzyme D NEURON Y acetylcholinesterase choline O tyrosine O acetyl coenzyme A

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