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Methylations status of six antioxidant genes. The methylation levels of GSTP1, TXNRD2, OGG1, TXN, NRF2 and TXNRD1 were measured in ARC and HMC lens epithelium using Sequenom MassARRAY. n = 3 individual patients, mean ± SD, unpaired two-tailed Student's t-test, *P < 0.05, **P < 0.01, ***P <0.001.
