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5 μm AFM topographic image of UL-D (A) and AFM height histogram of a single nanoparticle (B).
Notes: Height/length is in nm. The blue box (A) indicates a single nanoparticle used for the histogram.
Abbreviations: AFM, atomic force microscopy; UL-D, University of Luebeck-Dextran coated superparamagnetic nanoparticles.
