Growth Zone of <i>Arabidopsis</i> (IMAGE) Max-Planck-Gesellschaft Caption This is an pptical cross-section of the growth zone of Arabidopsis. The distribution of an essential regulator is shown in green, the cytokinin and auxin molecule are shown in red and green. Credit Jan Lohmann Usage Restrictions These images may only be used or reproduced for editorial purposes and in connection with scientific articles on our press material, in which case such usage or reproduction is free of charge and requires no permission. Any other use, in particular for commercial purposes, requires prior permission of the author or photographer. Further enquires can be answered in the Press and Public Relations Office - simply write an e-mail to gebhard@gv.mpg.de. 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.