Fig. 4.

The effect of proliferation by quercetin and K channel blockers in 253J cells (A) Cells were treated for three days with quercetin (50 µM) or various K channel blockers in the presence or absence of quercetin. After treatment, proliferation was detected by XTT assay. Error bars represent mean±standard error [SE] for 32 separate experiments. Dimethyl sulfoxide (DMSO) was used with the same volume of quercetin. Asterisks indicate values which are different from the respective control (t-test, p<0.05). (B) Effect of quercetin and K channel blocker on 253J cell growth and viability. Cells were grown in 2% serum culture media and captured 24 hrs after addition of channel blockers and quercetin using a Nikon microscope at 10×20 magnification. Scale bar, 200 µm