Insulin-like growth factor 1 (IGF-1), also called somatomedin C, is a protein that in humans. The insulin-like growth factors (IGFs) are proteins with high sequence similarity to insulin. IGFs are part of a complex system that cells use to communicate with their physiologic environment. I'm mean it is complicated, I wish I understood everything that goes on with the system but sadly I do not so I have to rely on information posted below. This complex system consists of two cell-surface receptors (IGF1R and IGF2R), two ligands (Insulin-like growth factor 1 (IGF-I) and Insulin-like growth factor … [Read more...]