Fumihiro Higashino, Hokkaido University (IMAGE) Hokkaido University Caption Fumihiro Higashino of Hokkaido University's Graduate School of Dental Medicine Credit Hokkaido University Usage Restrictions This image is copyrighted and can be used for reporting this research work without obtaining a permission if credited as instructed. 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.