Exploring the Role of Tripeptides in Wound Healing and Skin Regeneration: A Comprehensive Review Figure 2. [Growth hormone binding to the]. Endotext NCBI Bookshelf GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link