A Molecular Clock Determines 'Loyalty' of Every Developing T Cell (image) University of Basel Share Print E-Mail Caption When a developing T cell binds one of the body's molecules for a short time (less than 4 seconds), it is 'loyal' to the body and continues to mature into a pathogen-fighting T cell. (A). If the process exceeds four seconds, it triggers the death of the developing T cell (B). In this way, aggressive autoimmune T cells are eliminated from the immune system. Credit University of Basel, Department of Biomedicine Usage Restrictions None 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.