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doi: 10.1038/s41580-020-00300-2 125
Macrophage and fibroblast infiltration increase significantly, with measurable improvements in tendon-to-bone healing within 10 to 14 days in animal models
Therefore, using oral GHK-Cu and expecting systemic skin improvement, for example, is a fundamental misunderstanding of its pharmacokinetics
Most rigorous human evidence supports topical cosmetic use
