Figure 5.

Effect of methanol extracts from the leaves of two Achillea species (1 µg/ml) on DNA damage induced by H₂O₂ (500 mM) in human foreskin fibroblast cells (HFF3) assessed by Comet assay. A. eriophora and A. biebersteinii groups were pre-treated with different extracts (1 µg/ml), DMSO group was pretreated with DMSO and untreated group was the null control without any pretreatment. DNA in tail in each cell was calculated by comet score. The data represent mean±SD of 150 cells. *p<0.05 Starred values compared with means in untreated and DMSO groups which are treated with H₂O₂