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Studies by Pickart and colleagues published in 2012-2018 showed that GHK-Cu treatment of cultured human fibroblasts altered expression of several thousand genes, with patterns indicating increased expression of genes involved in tissue repair, antioxidant responses, protein synthesis, and cellular rejuvenation

We've found that -20C is perfectly adequate for short to medium-term storage (up to a year or two), while -80C extends its viability considerably, often for several years

Some men may also experience thinning at the crown (top of the head)

(2003) investigated Epitalon in human fetal fibroblast cultures that had reached replicative senescence