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The relative concentrations of Cu in the leaf blades, shoots, and roots of rice. Values are means ±SD of three individual samples. Actual Cu concentrations in the control leaf blades, shoots, and roots are 139±3, 165±13, and 2180±90 μg g−1 dry weight, respectively. The statistical significance was determined by Dunnett's multiple comparison tests. Asterisks indicate a significant difference compared with control (*P < 0.05, **P < 0.01, ***P < 0.001).
