Cystic Fibrosis Lung (IMAGE) Technical University of Denmark Caption CF-patients have a genetic defect which results in dehydrated sticky mucous in the lungs, leading to severe and persistent lung infections often caused by Pseudomonas aeruginosa. Credit Bunyos 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.