Bacterial Biofilm (IMAGE) Georgia Institute of Technology Caption Image shows a rendered confocal laser scanning micrograph of a mixed species bacterial biofilm observed in a chronic wound model of infection. Staphylococcus aureus (yellow) and Pseudomonas aeruginosa (purple), organize themselves in small, dense clusters of cells called aggregates. Credit Sophie Darch, Whiteley Lab and Rumbaugh Lab at Texas Tech University Health Sciences Center 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.