<i>Addiction</i> (IMAGE) Cold Spring Harbor Laboratory Caption Background is an immunohistochemical stain of cells; in the foreground are 3D reconstructions of NAc MSNs. Credit ©2013 Cold Spring Harbor Laboratory Press 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.