(IMAGE) Tokyo Medical and Dental University Caption This study discovered a new mechanism in which monomeric α-synuclein protein propagates via the brain lymphatic system and aggregates after incorporation to neurons. Credit Department of Neuropathology, TMDU 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.