Fig. 4

PT inhibits mitochondrial membrane potential. a HT-29 b SW480 c SW620 cells were treated PT for 24 h. Cells were washed with PBS and incubated with rhodamine 123 (25 ng/ml) at 37 °C for 20 min. Positive stained cells for rhodamine 123 were analyzed by flow cytometry. The bar graphs are presented as mean ± SD of three independent experiments. ***p < 0.001 vs control