Perineuronal Net (IMAGE) Oregon Health & Science University Caption New research suggests that the delicate molecular net (shown in blue) that surrounds brain cells associated with addiction (shown in red) can be fundamentally altered with even a small exposure to cocaine. Credit OHSU 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.