... Todistinguish total binding from non-specific binding, cells wereincubated for 10 min in either PBSCM alone or PBSCMcontaining 200 lm cocaine for inhibition of DAT or 200 lmS-citalopram for inhibition ... a-synuclein; DA, dopamine; DAT, dopamine transporter; NET, norepinephrine transporter; PBSCM, phosphate-buffered salinesupplemented with Ca and Mg; PD, Parkinson’s disease; SERT, serotonin transporter; ... After incubation with biotin, the cells werewashed twice in PBSCM supplied with 100 mm glycine, and incubated for 20 min to quench further cross-linking. Thequenching buffer was removed by washing...