ghk cu use GHK-CU – Research Peptide GHK-Cu Copper Tripeptide-1 Peptide –
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doi: 10.1073/pnas.1834399100 107 UenoyamaYNakamuraSHayakawaYIkegamiKWatanabeYDeuraCet al
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A 0.05% serum through microchannels behaves like 0.5% on intact skin
Subsequent work established that the same sequence exists in human plasma, saliva, and urine at concentrations that decline with age, and that the sequence is found as a subfragment of the alpha-2 chain of type I collagen, which means GHK is released into the tissue environment when collagen breaks down
