TNFRSF10A and cholangiocarcinoma: Treatment of CCA cells with genistein at 100 μM increased the TRAIL-R1 positive cells up to 54.3 ± 18.52%, 13.66 ± 5.67%, and 7.59 ± 2.16% in KKU100, KKU213A, and KKU055 cells, respectively, which were higher than those of untreated control (29.05 ± 14.89%, 5.96 ± 3.28%, and 2.69 ± 1.29%, respectively).