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Detection of superoxide anion, hydrogen peroxide, nitric oxide, peroxynitrite and RSNOs production in a longitudinal section of the primary roots (A,C,E,G,I), and the average fluorescence intensity levels quantified in arbitrary units (B,D,F,H,J), and effect of Sb on the EZ of tomato roots (K). At least five roots were tested for each experimental condition and five independent repetitions were analyzed.
