This naturally occurring tripeptide consists of glycyl-L-histidyl-L-lysine bound to copper ions, creating a synergistic complex that demonstrates remarkable regenerative properties for skin tissue
Nature Reviews Endocrinology , 17(7), 391-405
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Incidentally, the healthy reference range is 191-663 pg/ml and correlates closely with oral cobalamin intake, which is why the vitamin B12 blood level alone is not an adequate parameter to diagnose a deficiency (Herrmann and Obeid, 2014)
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