Microfibril Mapping (IMAGE) Penn State Caption An atomic force microscope allowed researchers a chance to take a much closer look at how microfibrils -- hair-like fibers made of cellulose that help form the plant cell walls -- moved in the wall. This close-up view may revise the understanding of how plant cell walls grow. Credit Patrick Mansell 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.