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These products contain the same GHK-Cu molecule

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AHK-Cu begins with alanine: AlanineHistidineLysine GHK-Cu begins with glycine: GlycineHistidineLysine Both peptides bind copper, but a small structural difference can influence how a peptide interacts with cells, proteins, and biological pathways

For step-by-step preparation and stock-solution arithmetic, see the guide on reconstituting research peptides with bacteriostatic water and the accompanying concentration & volume calculator walkthrough

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