RUO Recombinant Human IGF 1 LR3 Protein IGF 1 LR3 and Penis Enlargement: What the Evidence Actually Shows Insulin like growth factor 1 stimulates retinal cell proliferation via activation of multiple signaling pathways ScienceDirect IGF 1 LR3 vs GH Peptides The Battle Between Performance & Risk Most people think all peptides = fat loss., Thats not even close., IGF 1 LR3 isnt about burning tissue its about building it., This is the signal that tells muscle fibers to:, Recover faster, IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease