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A peptide with this breadth of documented activity should not be abandoned because of a manageable and explainable side effect
Quality and documentation notes (COAs and stability) Because GHK-Cu is discussed as chemically delicate in formulation contexts, label numbers are only part of the story
Lifespan extension and delayed immune and collagen aging in mutant mice with defects in growth hormone production
doi: 10.1073/pnas.92.15.7001 65 PengX
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