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GHK-Cu consists of glycine, histidine, and lysine arranged in sequence (Gly-His-Lys), with a Cu ion coordinated by the histidine imidazole, the N-terminal amine, and additional ligand contributions
In short, giving B12 to special groups needs a careful plan
Glutathione is a tripeptide composed of three amino acids: cysteine, glycine, and glutamic acid
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