Biofilms (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption The top image shows a thin and stiff biofilm formed from untreated water, and the bottom image shows a thick and soft biofilm that formed as a result of polyphosphate treatment. Credit Image courtesy Helen Nguyen Usage Restrictions Image may be used with stories related to this press release. Credit is required. Image courtesy Helen Nguyen. Share Print E-Mail 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.