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f-g , Single-cell clones were established from the polyclonal population, and GGT activity (f) (n = 3 technical replicates from 2 independent experiments) and cell numbers (g) (n = 6 technical replicates for Control or n = 4 technical replicates for Cys 2 -free + GSH from 2 independent experiments) for cells grown in control (208 M cystine

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A high glutathione concentration in the nucleus protects nucleic acids, proteins and lipids from oxidation

To keep the effects going, maintenance dosages are frequently needed