Other copper peptides studied include DAHK (the N-terminal copper-binding domain of human serum albumin), which has high copper affinity but primarily serves a copper transport rather than signaling function
Lee TH et al
Where Not to Inject GHK-Cu Do not inject into skin that is red, swollen, bruised, scarred, tender, infected, lumpy, hardened, or numb
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Professional monitoring helps determine dosage and track response