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The ghk-cu peptide is naturally present in our bodies, particularly in plasma, saliva, and urine, though its concentration declines sharply with age
Metalloproteinase Balance Wound healing depends on a careful balance between matrix metalloproteinases (MMPs), which break down damaged tissue, and their inhibitors (TIMPs)
Nat Rev Drug Discov 12:777790
Without this process, these substances would accumulate in tissues
Zimmerman BJ, Grisham MB, and Granger DN (1990)
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