Chuxuan Li of Rice University (IMAGE) Rice University Caption Rice University postdoctoral researcher Chuxuan Li views molecules through an FEI Tecnai TF20 cryo-transmission electron microscope, an important tool in her investigation of a DNA-repair enzyme called “Pol theta.” The research could help enhance cancer drug development. Credit Credit: Gustavo Raskosky/Rice University Usage Restrictions Must credit: Gustavo Raskosky/Rice University 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.