Slides Ready for Viewing (image) University of Houston Caption LEFT: The system being developed by UH Cullen College of Engineering researchers diagnoses disease by blocking holes with pathogens and some other connected material, in this case silver particles, preventing light from shining through. RIGHT: This is a close-up of nanoholes blocked by these particles. Credit Jiming Bao Research Group 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.