Myelin is a fatty substance that wraps around nerve cells in the nervous system, forming a protective sheath that helps to insulate and speed up the transmission of electrical signals along the nerve fibers. Research in the area of myelin focuses on understanding how myelin is formed, maintained, and repaired, as well as how disruptions in myelin can lead to neurological disorders such as multiple sclerosis. Studies in this field also explore the potential for therapies that target myelin to treat these disorders and promote nerve function and repair.