Leave Water (IMAGE) Elhuyar Fundazioa Caption A water detection image in vine leaf is shown. Leaf areas with more water, such as secondary veins, midrib and petiole, are highlighted in yellow-green colors. Credit Public University of Navarre 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.