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A1: GHK-Cu is a naturally occurring copper tripeptide found in human plasma and other body fluids, used in laboratory research to study wound healing, extracellular matrix dynamics, angiogenesis, antioxidant responses, and gene-expression changes

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The pattern of observed effects has been characterized as supporting ECM turnover and remodeling, increasing the expression of structural matrix components while modulating the balance between matrix-building and matrix-degrading enzymes

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