Cystic Fibrosis (IMAGE) Cold Spring Harbor Laboratory Caption The airways in cystic fibrosis patients can be blocked by mucus, allowing chronic infections by bacteria such as Burkholderia cenocepacia to develop. Credit Drexel Medicine. Usage Restrictions Image may be used with appropriate caption and credit. 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.