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GHK-Cu is stable at physiological pH (6.57.5) but dissociates below pH 4 or above pH 9, releasing free copper, which can be pro-oxidant if unbound
TB-500 has demonstrated neuroprotective effects in experimental models of neurological injury, and both peptides may have potential applications in promoting recovery following various forms of neurological trauma
Independent testing of research-grade peptides purchased online has found purity levels ranging from below 50% to over 100% of stated concentration, along with bacterial endotoxin contamination and incorrect peptide sequences
Glutathione peroxidase activity in selenium-deficient rat liver
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