Addiction Resistant? (IMAGE) Rockefeller University Caption When scientists manipulated mice to remove a specific protein from their brain's reward region, the animals showed a pronounced decrease in their preference for cocaine. Credit Laboratory of Molecular and Cellular Neuroscience at The Rockefeller University/PNAS Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. 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.