Fig. 11From: Passage of Magnetic Tat-Conjugated Fe3O4@SiO2 Nanoparticles Across In Vitro Blood-Brain BarrierThe localization of nanoparticles in U251 cells. a–c Fe3O4@SiO2-Amino NPs. d–f Fe3O4@SiO2-Tat NPsBack to article page