A Theoretical Link Between the GH IGF 1 Axis and Cytokine Family in Children: Current Knowledge and Future Perspectives Figure 1 from Intranasal Human Growth Hormone (hGH) Induces IGF 1 Levels Comparable With Subcutaneous Injection With Lower Systemic Exposure to hGH in Healthy Volunteers Semantic Scholar GHK CU Peptide for Skin Rejuvenation Wittmer Rejuvenation Clinic Everyone's calling GHK Cu a miracle peptide But let's separate marketing from mechanism. GHK Cu isn't magic. It's a signal. A signal that: Supports tissue repair Modulates inflammation Enhances collagen + Pediatric Implications of Normal Insulin GH IGF Axis Physiology Endotext NCBI Bookshelf Frontiers Growth hormone insulin like growth factor I axis in health and disease states: an update on the role of intra portal insulin