Fibroblast Growth Factor (FGF) is a group of proteins that play a crucial role in various biological processes, including cell growth, development, and tissue repair. FGFs are involved in the formation of blood vessels, wound healing, and the development of the nervous system. They interact with specific receptors on cell surfaces to trigger signaling pathways that promote cellular functions. There are several types of FGFs, each with distinct roles in the body. For example, FGF2 is important for angiogenesis, the formation of new blood vessels, while FGF21 is involved in metabolism and energy regulation. Dysregulation of FGFs can lead to various diseases, including cancer and cardiovascular disorders.