Flow (2 of 2) (IMAGE) Rice University Caption Rice University graduate student Marco Santoro fills a custom bioreactor with fluid as he prepares to test bone cancer cells embedded in a scaffold. The technique allows researchers to monitor the spread of cancer cells in more natural environments than can be achieved in two-dimensional cultures. Credit Jeff Fitlow/Rice University 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.