Bioenergy -- On the Surface (IMAGE) DOE/Oak Ridge National Laboratory Caption ORNL researchers used sophisticated laser scanning techniques to compare the breakdown of fermented popular (B) compared with unfermented popular (A), as they quantified, for the first time, chemical changes in the cell wall's surface. Credit Oak Ridge National Laboratory/Dept. of Energy 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.