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Fe accumulation patterns in roots of wild-type seedlings grown on +Pi and −Pi media. Fe in roots is shown at 4 to 8 DAG, as indicated by Perls staining (A and C) and Perls/DAB staining (B and D). The top, middle, and bottom rows in each section are photographs of the whole root, a part of the MZ, and the root tip, respectively. The root images of the top rows are composed of two tiled images. Roots of representative seedlings are shown. Bars = 100 μm.
