part of part of occurs in occurs in in taxon neurotransmitter secretion synaptic vesicle exocytosis biological_process Fusion of intracellular membrane-bounded vesicles with the pre-synaptic membrane of the neuronal cell resulting in release of neurotransmitter into the synaptic cleft. GO:0016079 regulated exocytosis establishment of localization in cell presynapse vesicle-mediated transport in synapse synaptic vesicle cycle signal release from synapse Metazoa