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2011, doi: 10.1016/j.cell.2011.02.013

The only downside

In our experience, inconsistent results often trace back to variability in methodology, and imprecise GHK-Cu needles syringes are a frequent culprit

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A compound that has never been tested also has no negative trials to disclose, which makes the absence of evidence read, perversely, as an absence of bad news

Helps reduce the appearance of dark spots