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The absorbance was recorded at 450 nm each day over a continuous span of 5 days, at consistent time intervals

Although intriguing, this theory demands further exploration and validation

In vitro studies have examined its interaction with fibroblast and keratinocyte cell preparations, documenting that the GHK-Cu complex stimulates collagen synthesis in cultured fibroblasts independently of changes in cell number [1], and that GHK-Cu increases matrix metalloproteinase-2 (MMP-2) protein and mRNA levels in fibroblast cultures

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