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GHK-Cu is studied because it may tilt skin cell signaling toward repair, with more matrix building and less matrix breakdown in certain models
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GHK-Cu acts primarily through gene expression reprogramming: whole-genome microarray and RNA sequencing studies demonstrate that GHK-Cu modulates ~4,000 genes in human fibroblasts and lung fibroblasts
Second, in the human-based research that was conducted, only male volunteers were used in the analysis, resulting in information about a subset of the population
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