Malthooslie writes to tell us ScienceDaily is reporting that scientists have managed to regrow nerve fibers after a spinal injury. Using an enzyme called sialidase, isolated from bacteria, researchers were able to stimulate nerve fiber growth in rats. From the article: "While surgeons can sometimes reattach the yanked nerves to the spinal cord, this treatment is not as effective as physicians or patients would like. This is in part because nerves in the brain and spinal cord, unlike those in the rest of the body, fail to grow new nerve fibers. Nerves in the brain and spinal cord are surrounded by signals from other cells in the injured area that stop them from growing."
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