Size-dependent Extraction (image) University of Cincinnati Caption This image shows the size-dependent extraction of particles. The fluorescent image indicates trapping of larger particles while smaller particles pass through. Credit Xiao Wang, University of Cincinnati Usage Restrictions None 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.