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Transmission electron microscopic analysis of ORMOSIL nanoparticles transfection at cellular level. a The ORMOSILNs are mainly distributed in the cytoplasm of MCF-7. The arrow indicates the ORMOSILNs. b Non-transfected cells (control). c ORMOSILNs distribute in the cytoplasm at ×100,000 magnification. The arrow indicates the ORMOSILNs in different sizes. d Non-transfected cells at ×100,000 magnification (control)
