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The effects persisted beyond the peptide's pharmacokinetic half-life, supporting the "trigger" hypothesis (PMID 514474)

Acta Physiol Scand 168(4):657665 Gills JL, Glenn JM, Gray M, Romer B, Lu H (2021) Acute citrulline-malate supplementation is ineffective during aerobic cycling and subsequent anaerobic performance in recreationally active males

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The Science: GHK-Cu as a "Biological Architect" GHK-Cu (Copper Tripeptide-1) is a naturally occurring complex in human plasma that declines sharply as we age

Angiogenesis Mechanisms and Blood Vessel Modeling The pentadecapeptide component actively stimulates pathways responsible for angiogenesis, which scientists define as the formation of new blood vessels