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Non-denaturing PAGE and immunoblot analyses of FeSOD in F. diplosiphon B481-WT and B481-SD strains grown in BG-11/HEPES medium containing 3.2, 6.4, and 51.2 mg L–1 nZVIs. (a) Immunoblot analysis for detection of FeSOD protein accumulation. (b) FeSOD volume in extracted protein lysate. Different letters above the final concentration point indicate significance among treatments (p < 0.05).
