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# Long description

The diagram shows secretion, receptor binding and reuptake of serotonin. The serotonin is contained inside a vesicle in the presynaptic neuron, the vesicle moves to the cell membrane and discharges the serotonin into the synaptic gap. Serotonin then binds to its receptors on the postsynaptic neuron. Finally the serotonin is taken back into the presynaptic neuron by the serotonin reuptake transporter.