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That tells me to avoid oversimplifying the case

Borchel A, Verleih M, Rebl A, Khn C, Goldammer T

Research demonstrates that GHK-Cu stimulation of collagen synthesis begins at concentrations between 10 and 10 M and maximizes at 10 M, with effects independent of changes in cell proliferation, indicating direct activation of synthetic machinery rather than simply increasing fibroblast numbers

Abstract Recent studies have demonstrated that the development and progression of hypertensive kidney injury comprise not only elevated systemic blood pressure but also a complex interplay of cellular, molecular, and genetic mechanisms