Binary C. Diff Toxin (IMAGE) Advanced Science Research Center, GC/CUNY Caption This atomic illustration shows the newly identified CDTB component of the binary C. diff toxin, which researchers now know attaches to the surface of human cells and injects the CDTA portion of the toxin inside the cell. Credit Xingjian Xu and Edwin Pozharski Usage Restrictions Can be used in conjunction with this study. 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.