ghk-cu angiogenesis GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration GHK-Cu - Peptide for Collagen,
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[DOI] [PubMed] [Google Scholar] 15.Ehteshamfar S.M., et al

J Neurochem 52: 17811786

Quality testing claims

26 , 27 Cortin was extract from the adrenal gland cortex, and called life-maintaining factor

There were 81 participants that began the study, but 6 withdrew prior to completion
