Figure 2From: Antioxidant intervention of smoking-induced lung tumor in mice by vitamin E and quercetin DNA damage in lung cells from different groups (comet assay). The length of the DNA comet tail in the TS group was longer than that from the three control groups and the TS+VE and TS+Q+VE groups (p < 0.05); the length of DNA after digestion with proteinase K [PK(+)] in all TS groups increased significantly compared with non-digested samples [PK(-)].Back to article page