Detecting Glutathione and Related Antioxidants as Biomarkers in Patient Breast Tumor Tissues: An Update in the Age of Metabolomics.

For GSH, two studies [ 27 , 75 ] reported an increase in GSH in ER+ tumor tissue, whereas one study reported a decrease [ 42 ] and two other studies [ 10 , 37 ] reported that GSH (and Cys) tended to lower levels, but these changes did not reach statistical significance.

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