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Important caveat: there are no completed controlled human clinical trials of injectable or systemic GHK-Cu
Logic is not evidence
In models of mucosal damage (including that induced by ethanol or stress), the peptide exhibited a protective action on the stomach and duodenum and supported the integrity of the intestinal barrier
GHK-Cu has the advantage of being a naturally occurring human peptide with no reported adverse effects
Reduced expression of nuclear-encoded genes involved in mitochondrial oxidative metabolism in skeletal muscle of insulin-resistant women with polycystic ovary syndrome
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