HGH vs IGF 1 LR3: Scientific Comparison & Research Guide Product Question] The Ordinary is launching a new Growth Factor serum in January, thoughts? : r SkincareAddiction Localized Igf 1 transgene expression sustains hypertrophy and regeneration in senescent skeletal muscle Nature Genetics Igf 1 LR3 has been magic for me : r moreplatesmoredates Insulin like growth factor 1 stimulates retinal cell proliferation via activation of multiple signaling pathways ScienceDirect Insulin like growth factor 1 promotes cell cycle progression via upregulation of cyclin D1 expression through the phosphatidylinositol 3 kinase nuclear factor B signaling pathway in FRTL thyroid cells Acta Pharmacologica Sinica