SEM Polyketals Image (IMAGE) Georgia Institute of Technology Research News Caption Scanning electron microscope image of polyketal microparticles loaded with the therapeutic enzyme superoxide dismutase, which is used to treat acute liver failure. Credit Georgia Tech Image: Courtesy of Niren Murthy 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.