Protein Universe (IMAGE) American Friends of Tel Aviv University Caption This image shows networks of similarity among protein structural domains. The complex protein space features both continuous and discrete regions. Credit Varda Wexler of the multimedia unit of Tel Aviv University's Faculty of Life Sciences 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.