Food Derived TripeptideCopper Self Healing Hydrogel for Infected Wound Healing Biomaterials Research GHK Cu Peptide Benefits for Skin and Hair LIVV Natural GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link Dimeric copper peptide incorporated hydrogel for promoting diabetic wound healing Nature Communications