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A 2016 study published in Nature Scientific Reports showed that GHK-Cu had no cytotoxicity to human keratinocytes at concentrations up to 5,800 micromolar over 72 hours and did not induce inflammatory biomarkers
The tripeptide enters cells via PepT1 transporter and reduces pro-inflammatory cytokine secretion in intestinal epithelial cells and macrophages[14]
Wang W, Lee J, Harrou F, Sun Y
This increased susceptibility to neurological damage in children with autism from substances such as mercury
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