An Ultrathin Collagen Matrix Assembly (image) World Scientific Caption This is an ultrathin collagen matrix assembly maintained the morphology and function of primary liver hepatocytes in a microfluidic organ-on-a-chip device for two weeks. Three images of the hepatocytes after two weeks in a microfluidic device: A phase contrast image of cell morphology at two weeks showing dense cytoplasm, distinct nuclei, and bright cell borders; bile canalicular network development (red); and cell nuclei (blue) and actin (green) organization demonstrating cell polarity. Scale bar: 50 microns. Credit Credit: William McCarty, the Center for Engineering in Medicine at the Massachusetts General Hospital, Harvard Medical School, and the Shriners Hospitals for Children-Boston. 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.