GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect 5 alpha Reductase Inhibitors, Agonists and Modulators BOC Sciences The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget Expression and Purification of Recombinant GHK Tripeptides Are Able to Protect against Acute Cardiotoxicity from Exposure to Waterborne Copper in Zebrafish Crystal structure of steroid reductase SRD5A reveals conserved steroid reduction mechanism Nature Communications 89030 95 5 GHK Cu Gly His Lys Cu Copper Tripeptide 1; Prezatide copper