Expressions of ALRs (IMAGE) Stockholm University Caption ALRs are essential for the patients´ response to radiation and chemotherapy: A schematic depiction of how by impeding the repair of DNA breaks, ALRs enhance the killing effects of radiation and chemotherapy. Schematic prepared by Hui Jiang and Nelson Gekara. Credit Schematic prepared by Hui Jiang and Nelson Gekara. Usage Restrictions For media use only. 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.