Structure of bismuth subsalicylate (IMAGE) Stockholm University Caption Researchers at Stockholm University have applied advanced electron microscopy techniques to finally unveil the structure of the widely used and century-old active pharmaceutical ingredient bismuth subsalicylate. Credit Mathias Nero Usage Restrictions Free for media to use License Original 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.