ghk-cu tolerance desensitization downregulation effectiveness loss over time Tripeptide–copper complex GHK‐Cu (II) transiently improved healing outcome in a rat model of ACL reconstruction - Fu - 2015 - Journal of Orthopaedic Research Mod GRF 1 29 Summary:

We have previously demonstrated that these fluxes of cytosolic glutamate can occur without significant increases in oxidative stress or altered cell viability (16)

topical studies in cosmetic research employ 15% concentrations

An unpaired t test was used for intergroup comparisons between the NUA and HUA

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