FIGURE 2.
Effects of CCE on cell viability of CSE-induced NHBE cells. CCK-8 assay was conducted to measure the cell viability after being exposed to CSE (A) with or without CCE for 24 h (B). The optimal concentrations of CSE and CCE were chosen for further experiments. The absorbance values of samples were detected in microplate. Data are expressed as means ± SD (n = 6).