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So, Does GHK-Cu Need to Be Refrigerated

doi: 10.1016/j.freeradbiomed.2007.10.054

This peptide has been studied for its role in tissue repair and recovery, making it a popular choice among athletes and those recovering from injuries

Another protein that has been proposed as a direct biomarker of gut barrier integrity is zonulin [prehaptoglobin-2, (92)], a protein involved in the regulation of tight junction (114)
