Pseudomonas aeruginosa (IMAGE) University of Basel Caption The nosocomial pathogen Pseudomonas aeruginosa colonizes the lung mucosa (blue) by forming two distinct subpopulations – sessile (red) and motile (green) bacteria. Credit Benoit-Joseph Laventie, Biozentrum, University of Basel Usage Restrictions ONly to be used in reporting on the related press 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.