. "\"The chemical reactions and pathways involving neurotransmitters, any of a group of substances that are released on excitation from the axon terminal of a presynaptic neuron of the central or peripheral nervous system and travel across the synaptic cleft to either excite or inhibit the target cell.\" [CHEBI:25512, GOC:jl]" . . "neurotransmitter metabolic process" . "neurotransmitter metabolism" . "Reactome:REACT_100207 \"Metabolism of Noradrenaline, Danio rerio\"" . "Reactome:REACT_101077 \"Metabolism of Noradrenaline, Taeniopygia guttata\"" . "Reactome:REACT_103666 \"Metabolism of Noradrenaline, Rattus norvegicus\"" . "Reactome:REACT_104729 \"Metabolism of Noradrenaline, Xenopus tropicalis\"" . "Reactome:REACT_108898 \"Metabolism of Noradrenaline, Canis familiaris\"" . "Reactome:REACT_115498 \"Metabolism of Noradrenaline, Dictyostelium discoideum\"" . "Reactome:REACT_15390 \"Metabolism of Noradrenaline, Homo sapiens\"" . "Reactome:REACT_57518 \"Metabolism of Noradrenaline, Gallus gallus\"" . "Reactome:REACT_87838 \"Metabolism of Noradrenaline, Bos taurus\"" . "Reactome:REACT_90506 \"Metabolism of Noradrenaline, Mycobacterium tuberculosis\"" . "Reactome:REACT_94583 \"Metabolism of Noradrenaline, Sus scrofa\"" . "Reactome:REACT_99002 \"Metabolism of Noradrenaline, Mus musculus\"" . . .