fig5

Figure 5. Cellular uptake of ^99mTc-DMEOP and ^99mTc-TMEOP in MCF7 cells incubated for 1 h with: (A) increasing concentrations of K⁺ and in the presence of valinomycin (1 µg/mL), where the results are presented as the percentage of uptake in relation to the medium with 5 mM K⁺; and (B) normal medium supplemented with nigericin (5 µg/mL) and CCCP (5 and 10 µM), where the results are presented as the percentage of uptake in relation to the normal medium. The results were calculated from independent biological replicates (n = 3) and are given as the average ± SEM. CCCP: carbonylcyanide m-chlorophenylhydrazone