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GHK-Cu (Glycine-Histidine-Lysine Copper) is one of the most researched peptides in regenerative biology with over 50 years of published studies spanning skin regeneration, wound healing, anti-inflammatory signalling, and gene expression modulation

It is a synthetic pentadecapeptide - a chain of exactly 15 amino acids - derived from a naturally occurring protein found in human gastric juice

Also interesting, no nitrosylation of GSH/GSSG was oberved in the presence of iron complexes, which seems to indicate a preferential oxygen activation chemistry by this transition metal ion

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