GHK-Cu peptide is a naturally occurring copper-binding tripeptide first isolated from human plasma in the early 1970s by Loren Pickart and colleagues. Its full chemical name is glycyl-L-histidyl-L-lysine copper(II) https://mariamnzsv544408.link4blogs.com/62135862/what-is-ghk-cu-peptide-structure-science-research-use