Brain Cells with Blocked FGF9 Production (IMAGE) Michigan Medicine - University of Michigan Caption The green cells show where the researchers used an injected virus to block production of FGF9 in rat brains -- and reduce anxiety-like behavior. Credit University of Michigan - Akil laboratory Usage Restrictions Attribution to University of Michigan required 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.