A–C, Cellular uptake of 10 nM T₄, T₃, and 3,3′-T₂ by COS1 cells transfected with CRYM in combination with EV, FLAG-tagged LAT1, LAT2, LAT3, LAT4, LAT5, or MCT8 after 30 minutes of incubation. Uptake is presented as a percentage of added substrate. Results are the means ± SEM of two to three experiments. Significance represents EV vs different transporters. *, P < .05; **, P < .01; ***, P < .001.