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Sensitivity of Arabidopsis wild-type (WT) and mutant seedlings to As(V) exposure. FWs of wild-type, cad1-3, and cad2-1 mutant seedlings after growth in the medium with different concentrations of As(V) for 1 week. Data are means ± se (n = 12). Lines are fitted log-logistic curves. A small value (0.1) was added to the zero As(V) treatment to allow log transformation. EC50, Effect concentration of As(V) (μm) causing 50% inhibition of growth.
