IGF 1 LR3 vs HGH: Which Growth Enhancer Is Better? Swolverine Full article: Cell cycle control by the insulin like growth factor signal: at the crossroad between cell growth and mitotic regulation Recombinant expression of IGF 1 and LR3 IGF 1 fused with xylanase in Pichia pastoris Applied Microbiology and Biotechnology Springer Nature Link IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society Mechanisms of IGF 1 Mediated Regulation of Skeletal Muscle Hypertrophy and Atrophy Switched things up and have been using my IGF 1 LR3 30 mins pre workout and have been noticing longer lasting pumps and more vascularity so far! 2 more weeks until I cycle