“…Cite this article as Cold Spring Harb Perspect Biol 2012;4:a005595 highly sensitive fluorescence and radiotracer flux assays for epinephrine, norepinephrine (NE), DA and 5-HT enabled Julius Axelrod and his colleagues to identify reuptake as the major mechanism that terminates synaptic transmission (Axelrod 2003). In particular, the group showed that the actions of multiple psychotropic drugs, including cocaine and tricyclic antidepressants, derive from their inhibition of biogenic amine reuptake (Whitby et al 1960;Hertting et al 1961;Glowinski and Axelrod 1964).…”