IMAGE (IMAGE) Nara Institute of Science and Technology Caption A model of the expansion and contraction of pulvinar motor cells associated with the opening and closing of pulvinar slits in legume leaf movement. Credit Miyuki T Nakata Usage Restrictions Credit required. 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.