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Stimulation of both these pathways leads to a much greater GH pulse than either of these compounds producing alone, yet it is still only one single, time-limited pulse rather than a sustained elevation

Although GHK-Cu continues to receive significant scientific attention, research involving copper peptide biology , extracellular matrix regulation , gene expression , copper-dependent molecular pathways , and intranasal peptide formulation science remains active and continues to evolve

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USA 79 , 345349 (1982)

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