Bar Code (IMAGE) Brown University Caption Two molecular markers, indicated by the red and green fluorescence, are found together only in synaptic Schwann cells. Together they offer a "bar code" that identifies Schwann cells, an important subtype of glia. Credit Valdez Lab / Center for Translational Neuroscience / Brown University 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.