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Nano iron particle labeling of endothelial progenitor cells. A) The cytochylema in Resovist-labeled cells contained brown-colored granules. B) Prussian blue staining for iron showed the cytosolic deposition of blue crystals. C) A trypan blue cell viability assay revealed no significant difference between unlabeled cells and iron-labeled cells.
Note: Magnification: ×100.
