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Plant J 35:2732 Wachter A, Wolf S, Steininger H, Bogs J, Rausch T (2005) Differential targeting of GSH1 and GSH2 is achieved by multiple transcription initiation: implications for the compartmentation of glutathione biosynthesis in the Brassicaceae

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Under physiological conditions, intracellular iron homeostasis is tightly regulated by the IRP-IRE system, which controls cytoplasmic iron concentrations [53]

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They choose various supplements they think will work for their condition, but mixing supplements can be dangerous and result in unintended consequences