Figure 2. Expression of PCNA, γH2AX, MRE11 and p21 in EpiOral (A) and EpiGingival (B) tissues treated with 1a, 1b, 2a, and 2b antioxidants. CT, control tissues; 1a, 1b, 2a, 2b, tissues treated with antioxidants. Antioxidants: 1a, 6′-hydroxy-2′,5′,7′,8′-tetramethylchroman-2′-yl) methyl 3,4,5-trihydroxybenzoate; 1b, 6′-hydroxy-2′,5′,7′,8′-tetramethylchroman-2′-yl) methyl 3,5-dimethoxy-4-hydroxycinnamate; 2a, N-decyl-N-(3,5-dimethoxy-4-hydroxybenzyl)-3-(3,4-dihydroxyphenyl) propanamide; 2b, N-decyl-N-(3-methoxy-4-hydroxybenzyl)-3-(3,4-dihydroxyphenyl) propanamide.