The conceptual diagram of this study (IMAGE) Tokyo University of Agriculture and Technology Caption The conceptual diagram of this study Credit Ryu Ukawa-Sato, Tokyo University of Agriculture and Technology Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only 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.