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It has a high affinity for divalent copper ions and forms the biologically-active GHK-Cu complex used across research applications

Heard a lot about peptides and the FDA recently

PubMed Giusti M, Carraro A, Porcella E, et al

Recovery / Repair Related Research Compounds Repair Research GHK-CU A copper-binding peptide studied in laboratory research related to extracellular matrix protein synthesis modeling, fibroblast activity studies, and matrix metalloproteinase pathway research

To improve the local resolution of CTR-RAMP extracellular domains (ECDs), focused refinements (masking around receptors or ECD domains) were performed