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GHK-Cu is naturally present in the human body, but levels decline with age

Nutrients 12 , 1864 (2020)

GHK-Cu Copper Complex Research Compound Discover GHK-Cu (Glycyl-L-Histidyl-L-Lysine Copper) a naturally occurring triamino acid-copper complex identified in human biological fluids

Eur J Endocrinol 162:10351042 Zhang Z, Li Q, He W, Qiu H, Ye H, Wang Y, Shen M, He M, Yu Y, Shou X, Huang C, Yu H, Huang G, Tang W, Geng D, Fu C, Liu C, Ma Z, Ye Z, Zhang Q, Zhang Y, Shen Y, Yang Y, Wang M, Liu X, Lu Y, Hu R, Mao Y, Zhou L, Li Y, Li S, Tritos NA, Zhao Y (2018) The comprehensive impact on human body induced by resolution of growth hormone excess

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