Scanning Electron Micrograph (IMAGE) University of Cambridge Caption This scanning electron micrograph shows that the surface of a wing scale is covered with concavities. Credit Mathias Kolle, University of Cambridge 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.