Figure 7.

Inhibition by disprocynium24 of uptake of cimetidine, noradrenaline (NA), or MPP⁺ into 293 cells expressing EMTr in K⁺ buffer. Shown as a function of inhibitor concentration is mean±s.e.mean (n=3) of specific uptake relative to control of labelled substrate (each at 0.1 μmol l⁻¹) as indicated. Cells were preincubated with inhibitor for 24 min. For further details see legend to Figure 2.