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Sibbe M, Forster E, Basak O, Taylor V, Frotscher M (2009)

keep Lyophilized (freeze-dried) powder refrigerated at 2 to 8 degrees Celsius

Cell Viability Assay The cell viabilities of different concentrations of GHK, Cu(OAc) 2 and CuCl 2 against Human adult low Calcium high Temperature (HaCaT) keratinocytes were studied by MTT assay in 6 replicates

In-vitro assays show the molecule is membrane-permeable, which supports the possibility of oral absorption, but the animal efficacy studies used injection, and no study has directly compared oral versus subcutaneous bioavailability

The specific storage and B12 injection instructions are added to a drug pack