ghk-cu copper binding affinity (Gly-His-Lys complex) is a tripeptide with high Cu²⁺ affinity, studied in extracellular matrix modeling, tissue repair, and angiogenesis research. Each lot undergoes HPLC and MS characterization -- ≥99% purity, verified FDA moves toward easing Size:30mL* 1 vial Smoother Skin
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