Magnetite NanoparticlesFerrosoferric OxideDextransPrussian Blue ReactionMagneticsOxidesFerric CompoundsMagnetic Resonance ImagingParticle SizeCell TrackingContrast MediaNanoparticlesFerrocyanidesMagnetsMagnetic FieldsMetal NanoparticlesStaining and LabelingIronNanostructuresMicroscopy, Electron, TransmissionPolylysineNanomedicineDrug Delivery SystemsMicrospheresErbiumNanocapsulesImage EnhancementPhantoms, ImagingMagnetosomesNanotechnologySilanesPolyethylene GlycolsSurface PropertiesSuspensionsNanoshellsDrug CarriersCoated Materials, BiocompatibleIron CompoundsCarbocyaninesMolecular ImagingChitosanCell SurvivalMaterials TestingVirionMesenchymal Stromal CellsImmunomagnetic SeparationSilicon DioxideBiocompatible MaterialsMagnetospirillumGoldMacrophagesHyperthermia, InducedTissue DistributionSensitivity and SpecificityCell Line, TumorRats, NudeMesenchymal Stem Cell TransplantationMicellesElectromagnetic FieldsMagnetic Resonance Angiography