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GHK-Cu (sister peptide) delivered by repeated subcutaneous injection into rat wound chambers produced concentration-dependent increases in collagen, glycosaminoglycans, protein and DNA primary in-vivo evidence that the copper-tripeptide class is bioactive by injection in animals, but for GHK-Cu, not AHK-Cu
However, DSIP does not seem to carry the same tolerance or dependence risks
Injection site reactions such as redness or mild irritation
Dogs and cats rarely react to poison oak because their fur acts as a barrier
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