Figure 5

Effect of CSE on cell viability in isolated fetal rat lung fibroblasts. MTT activity was measured in fetal rat lung fibroblasts exposed to different concentrations of CSE (5%, 10% or 15%) (v/v) for 60 minutes. Cells not exposed to CSE were considered as controls. Level of absorbance was measured at 540 nm. Each bar represents the mean ± SEM of three experiments of 16 samples in each. (*) indicates (p < 0.05) significantly different from the corresponding controls.