Distinguishing enantiomers (IMAGE) Paul Scherrer Institute Caption At the Swiss Light Source SLS at PSI, researchers have successfully shown that enantiomers can be distinguished from one another using helical X-ray light. Enantiomers are molecules that are mirror images of each other. Separating such molecules is relevant in biochemistry and toxicology, as well as in drug development. Credit Paul Scherrer Institute/Benedikt Rösner Usage Restrictions PSI provides image and/or video material free of charge for media coverage of the content of the above text. Use of this material for other purposes is not permitted. This also includes the transfer of the image and video material into databases as well as sale by third parties. 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.