Programming Killer T Cells (image) University of California - San Diego Share Print E-Mail Caption The protein Runx3 programs killer T cells to target infected tissues and tumors. Credit UC San Diego Usage Restrictions Image to be used with news release about Nature paper. Share Print E-Mail 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.