<em>Francisella novicida</em> (IMAGE) University of Basel Caption Macrophage infected with Francisella novicida (magenta) assembles a dynamic nano-speargun (green). Credit University of Basel, Biozentrum Usage Restrictions Give adequate attribution to the original author 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.