Fig. 4

MTT assay. A549 cells were treated with different concentrations of rose extract for 48 h. Control is concentration 0 µg/ml of RE. Cell viability assay was performed using MTT and measuring absorbance at 48 h. Data were represented as mean ± SEM, performed in triplicate. *p < 0.05 and **p < 0.01 for 0 µg/ml vs. 100, 250, 500, 750 and 1000 µg/ml. Data was analysed using one-way ANOVA followed by Dunnett’s multiple comparison t-test)