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Biogenic amine

(Science: biochemistry) amines found in both animals and plants that are frequently involved in signalling. There are several groups: ethanolamine derivatives include choline, acetylcholine amp, muscarine, catecholamines include adrenaline, noradrenaline & dopamine, polyamines include spermine, indolylalkylamines include tryptamine & serotonin, betaines include carnitine, polymethyline diamines include cadaverine & putrescine.