is ghk-cu naturally occurring in humans Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy GHK-CU – NU BIOGEN
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In the supplement world, synthetic peptides are lab-made versions designed to mimic or trigger those same biological signals

Additionally, it enhances stem cell differentiation and tissue repair, promoting the regeneration of damaged nerve tissue

& Sharma, A

Jrvinen, A., Laine, M
Neuregulin and IGF1 can act synergistically to increase mitochondrial biogenesis and mtDNA replication in primary Schwann cells, which requires both the ERK and PI3K signaling pathways (Echave et al., 2009)
