A better, redder biosensor paves way for medical discovery (image) University of Virginia Health System Share Print E-Mail Caption Hui-wang Ai, PhD, (left) and Shen Zhang, PhD, have developed a simple and effective improvement to fluorescent "biosensors" widely used in scientific and medical research. Credit Courtesy Ai lab Usage Restrictions May be used to accompany news coverage of the biosensor enhancement. All other uses require express written permission from UVA Health. 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.