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Specifically, the enzymatic activity of glutathione synthetases decreased slightly at earlier time points, but increased slightly at later time points

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Storage & handling Store the lyophilized vial refrigerated at 28C, protected from light and heat Reconstitute with bacteriostatic water

Transdermal and other non-invasive delivery approaches remain active areas of research

Some peptides are more stable in solution, some degrade faster, and some research settings use more conservative windows because sterility risk matters as much as molecular stability