IGF 1LR3 IGF 1 inhibits inflammation and accelerates angiogenesis via Ras PI3K IKK NF B signaling pathways to promote wound healing ScienceDirect IGF 1 LR3 DOSES FOR MASSIVE GROWTH! #askDave IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society If your priority is building muscle, IGF 1 is what really matters.