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In vitro studies have shown increased collagen I and III gene expression and protein production in fibroblast cultures treated with GHK-Cu, with effects observed across a range of nanomolar to low micromolar concentrations
The compound is synthesized using solid-phase peptide synthesis and purified to analytical standards suitable for controlled biochemical experimentation
Specific figures circulating on commercial sites could not be verified in peer-reviewed literature and directly conflict with the published consensus that no human trials have been conducted treat them as unverified
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