Image of Bacteria (image) The Hebrew University of Jerusalem Caption Scanning electron microscopy image of bacteria (the cylindrical objects) attached to host cells. These bacteria are in the process of injecting the host cells with the toxins. Credit Hebrew University illustration Usage Restrictions None 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.