(IMAGE) University of Cologne Caption Cold temperatures activate a cellular cleansing mechanism that breaks down defective protein aggregations: Expression of PSME3 in germline, neurons and gut of nematode. Credit David Vilchez and Hyun Ju Lee Usage Restrictions none License Original 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.