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Description
In the regeneration stage, tendon fibroblasts migrate into the injured site, proliferate and produce different types of collagens and glycoproteins to form the extracellular matrix

In: Huang C., Zhang Y., editors

So, which option you choose will depend on what you are trying to achieve with GHK and how much you are willing to go through for it
The mechanism (crossing the blood-brain barrier to raise alpha brain waves and gently modulate GABA, glutamate, dopamine and serotonin for relaxation without sedation)
