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Quantification was done by integration of the extracted ion chromatogram peaks for the following ion species: m/z 45 for acetate eluted at 7.8 min, m/z 74 for propionate eluted at 9.6 min, and m/z 60 for butyrate eluted at 11.5 min

Bio-Rad Laboratories), with all samples from each subject loaded onto the same gel, and electrophoresis was performed on ice at 300 V for 30 min

It is often categorized as a multi-component peptide blend, developed to support investigations into cellular communication, molecular pathways, and GHK-Cu Peptide Research Overview, Mechanism, Applications & Safety Information April 11, 2026 Introduction GHK-Cu (Glycyl-L-Histidyl-L-Lysine Copper) is a naturally occurring copper-binding tripeptide that has attracted significant attention in biochemical and dermatological research

doi: 10.1016/j.polymdegradstab.2019.02.024 92 XiaY.YangL.XuS.XiaY.PengL.WuY.et al