a-synuclein in a Brain with Parkinson's (IMAGE) Johns Hopkins Medicine Caption This image shows clumps of the protein a-synuclein in a Parkinsonian brain. Credit Donghoon Kim/Johns Hopkins Medicine 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.