Fig. 2. Confirmation of labeling stem cells with superparamagnetic iron oxide (SPIO) nanoparticles.
Un-labeled human bone marrow-derived mesenchymal stem cells (hBM-MSCs) (A) and SPIO-labeled hBM-MSCs at 50 µg Fe/mL (B) stained with Perls' reagent. All cells in B were sufficiently labeled without any abnormal changes in morphology (× 400, Prussian blue staining).