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. 2015 Jan 6;15(1):855–867. doi: 10.3390/s150100855

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© 2015 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

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Figure 6. — Different regions of the roots respond with a similar pattern, but the elongation region exhibits the most dramatic change. Different regions of Arabidopsis roots treated with 1 mM Al were evaluated for changes in intracellular H₂O₂ levels (see inset). Note that all the regions responded at the same time, but with a different strength. 1 = apical, 2 = meristem, 3 = elongation 1, 4 = elongation 2, 5 = elongation 3, 6 = differentiation, 7 = mature.