Fig. 3 (IMAGE) Osaka University Caption Mesophyll cells recognized their position by sensing a release from the pressure. Credit Hiroyuki Iida Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. 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.