Silicon Device Graphic (IMAGE) Princeton University Caption This silicon chip features cell growth regions separated by funnel-like structures. Cells must crawl between the funnels to migrate from one region to another, allowing researchers to sort the cells according to their motility. In future experiments, similar microstructures will be used to screen for cells that have acquired through genetic changes an increased ability to invade surrounding tissue. Credit Courtesy of Austin Lab 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.