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In 28-month-old mice, roughly equivalent to elderly humans, three weeks of GHK-Cu administration produced significantly faster maze navigation with evidence of decreased brain inflammation and increased histone deacetylase 2 labeling, an indicator of epigenetic pathway activation

17 It is also expressed on a range of other cells, including normal plasma cells, natural killer (NK) cells, and CD8+ T cells

Here is an important detail many people miss: once a pen has been at room temperature, you cannot put it back in the refrigerator