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GHK (glycyl-L-histidyl-L-lysine), an endogenous tripeptide that is isolated from the plasma, tightly binds copper ions forming the GHK-Cu complex
GHK is a tripeptide (glycyl-L-histidyl-L-lysine) naturally found in the human body 1 that binds to the copper (II) ion forming GHK-Cu (Cu is the element abbreviation for copper)
Cell viability assays The cells were plated in triplicate in 96-well plates (4000 cells cultured in 2%FBS DMEM and 2000 cells cultured in 10% FBS DMEM)
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