The bacteriophage protein (IMAGE) Tel-Aviv University Caption The bacteriophage protein (green) does not kill bacteria when the DNA repair protein is absent (left). It kills bacteria by inhibiting division (elongated bacteria) only when the DNA repair protein is present (right). Credit Dr. Tridib Mahata. Usage Restrictions None 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.