Pseudomonas aeruginosa biofilm (IMAGE) University of Pittsburgh Caption Pseudomonas aeruginosa biofilm (red) surrounds cells lining the sinuses of a person with cystic fibrosis (blue) Credit William DePas, Ph.D. Usage Restrictions For use with this embargoed release License Original 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.