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Effects of EGCG treatments on oxidative stress and DNA damage repair in the H1299 cell lines. The cells were treated with 5–50 μM EGCG for different time periods. (A) Representative microphotographs of 8-OHdG- and γ-H2AX-stained cells in the presence of 50 μM EGCG for 12 and 24 h. (B) Western blots for γ-H2AX with 5–50 μM EGCG in the presence or absence of SOD/catalase (CAT) (5 U/ml, 30 U/ml) for different time periods. The values shown are mean ± SD.
