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Studies suggest that the copper(II) ion is essential for biological activity, as the apo-peptide (GHK without copper) shows reduced activity
There is no minimum order size, so both new brands that need to test things out in small amounts and well-known brands that want to buy in bulk at a good price can do so
Keep in the original packaging: If researchers change the container, subjects may be more susceptible to infection due to increased risk of contamination
It targets dopamine-serotonin interactions in motor-reward circuits rather than the traditional raphe-cortex pathway targeted by SSRIs
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