Root Ball (image) Helmholtz-Zentrum Berlin für Materialien und Energie Share Print E-Mail Caption Sequential tomography of a lupin root (yellowish green) after deuterated water (D2O) was introduced from below. The rising water front (H2O, dark blue) is displaced by the D2O from below over the course of time. Credit ©Christian Tötzke/ University of Potsdam Usage Restrictions None Share Print E-Mail 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.