Membrane Cross Section (IMAGE) Duke University Caption Scanning electron micrographs show the detailed fibers of the SF membranes Credit Xingrui Mou & Samira Musah, Duke University Usage Restrictions Usage with credit License Original 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.