Fluorescent soft beads (IMAGE) Technische Universität Dresden Caption Fluorescent soft beads passing through the narrowing channels of a biochip. Credit © MPZPM, Salvatore Girardo 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.