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Effects of propofol preconditioning on GES‐1 cells' (A) malondialdehyde (MDA) contents and (B) superoxide dismutase (SOD) under H/R conditions. Each value represents the mean ± standard deviation (n = 6). *p < 0.05. **p < 0.01 vs. N group. # p < 0.05. ## p < 0.01 vs. H/R group.
