Cystine Kidney Stone (image) International Union of Crystallography Caption This is a SEM image of stones treated by two different drugs. Above you see altered crystals with a rough surface, below, you see crystal edges still well defined, suggesting limited effect of treatment. Credit Dominique Bazin et al Usage Restrictions None 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.