1.   Instead, it ends up going after the fatty protective sheath around the nerves and brain cells.

2.   Myelin, the fatty protective sheath around certain nerve fibers, is patchily destroyed, disrupting messages from the nerves to the muscles, which become weak and nonfunctional.

3.   The reason for the different signaling rates lies in a fatty sheath called myelin that encompasses some nerves and not others, Olausson said.

4.   The protein works via a receptor called Nogo, located in myelin, the fatty sheath that surrounds nerve fibres.