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The overall selection process is summarized in a Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)-style flow diagram (Figure 2), which illustrates the number of records identified, duplicates removed, studies screened, excluded, and finally included (n=51)

GHK-Cu appears safe for use in lab research and cosmetic studies

doi: 10.1016/j.brainres.2011.06.063

By providing a physiologically relevant alternative to 2D cultures and animal models, this study supports iHLO adoption for drug discovery and preclinical testing
