How Acrolein May Damage Nerve Insulation (IMAGE) Purdue University Caption This drawing depicts how the environmental pollutant acrolein may damage nerve insulation called myelin in multiple sclerosis. "A" represents the normal structure of nerve fibers and myelin; "B" represents how acrolein is thought to damage myelin and cell membranes; and "C" shows how nerves with damaged myelin cannot properly conduct signals. Credit Purdue University graphic/Michel Schweinsberg Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.