IGF 1 LR3 (1 MG) Sigma Compounds Insulin like Growth Factor I Extends in VitroReplicative Life Span of Skeletal Muscle Satellite Cells by Enhancing G1 S Cell Cycle Progression via the Activation of Phosphatidylinositol 3 Kinase Akt Signaling Pathway ScienceDirect human IGF 1 LR3 protein 1000 g Human E. coli ReliaTech GmbH Researchers can't fully explain why IGF LR3 outperforms its natural counterpart in preclinical models. Engineered in the 1990s with an arginine substitution and N terminal extension, this synthetic IGF 1 analog shows reduced IGFBP binding Buy Receptor Grade IGF 1 LR3 (1mg) Biotech Peptides