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Zymogram of four isozymes of superoxide dismutase (SOD) in leaves of Phaseolus vulgaris L. Cv. VL 63 (mother variety) and two SOD-deficient mutant lines, sodPV 1, and sodPv 2 under untreated (control) and 50 μM arsenic- (As-) treated conditions; lane 1: mother control, lane 2: sodPv 1 (untreated), lane 3: sodPv 2 (untreated), lane 4: treated mother, lane 5: treated sodPv 1 mutant, and lane 6: treated sodPv 2 mutant.
