Bacterial Evolution in the CF Lung (IMAGE) Cell Press Caption Image depicts how the opportunistic bacteria <em>P. aeruginosa</em> genetically diversifies during cystic fibrosis infections. Credit Jorth et al./<em>Cell Host & Microbe</em> 2015 Usage Restrictions Credit Required. 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.