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[21] Under oxidizing conditions, hydrogen sulfide may react with glutathione (or other electrophilic oxidized forms of glutathione) to form glutathione hydropersulfide (GSSH), which is a superior radical-trapping antioxidant and reductant

in others, the picture is less clear

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At present, many studies report particle size, surface chemistry and module configurations under heterogeneous conditions, with limited, comparable readouts of TME modulation

This is a reversible, competitive inhibition mechanism that does not carry the cytotoxic risk of hydroquinone-based inhibitors