Propofol inhibited the proliferation of kidney cancer cells. A: Human OSRC-2 cells and SW839 cells were exposed to diverse concentrations of propofol (0, 1, 5, and 10 μmol/L). After 24 h, to measure the viability of the cells a standard CCK-8 assay was used; B: Human OSRC-2 and SW839 cells were exposed to 5 μmol/L propofol for 0, 24 h, 48 h, 72 h. The cell viability was assessed at different time points using CCK-8 assay. Data with the given parameters is shown in means ± S.E.M. *P<0.05, **P<0.01, ***P<0.001, while comparing to control (Student t test, ANOVA and post hoc test).