Fig. 5

Effects of thymol and 6-OHDA in the presence of thymol on PC12 cells. a Effect of different doses of thymol on the viability of PC12 cells for 24 h. b Effect of 24-h post-treatment with the different concentrations of thymol on the viability of PC12 cells initially exposed to 6-OHDA for 24 h. c Effect of 24-h post-treatment with the different concentrations of thymol on the ROS generation in PC12 cells exposed to 6-OHDA for 24 h. d Effect of 24-h post-treatment with the different concentrations of thymol on lipid peroxidation in PC12 cells exposed to 6-OHDA for 24 h. Values shown are means ± SEMs of three independent experiments performed in 4 replicates. ### p < 0.001 versus the untreated control cells; αα p < 0.01 and ααα p < 0.001 versus the 6-OHDA treated cells