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Hemolysis assay for the Fe3O4@SiO2/PEI nanoparticles. (A) Hemolysis detection by UV-vis spectrophotometer; (B) Mignifation of the circle indicated; (C) Photo of hemolysis at various concentrations of nanoparticles.
Notes: The bottom-right inset is the photo of the direct observation of hemolysis by Fe3O4@SiO2/PEI at different concentrations; 0.9% NaCl is the negative control and H2O is the positive control.
Abbreviation: PEI, polyethylenimine.
