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. 2019 Nov 22;12(23):3850. doi: 10.3390/ma12233850

Figure 4.

Figure 4

Cytotoxicity of Fe3O4 nanoparticles to hADSCs depending on concentration used for treatment. (a) Cell viability of hADSCs treated with or without Fe3O4 nanoparticles (* p < 0.05 versus all other groups). (b) Apoptosis of hADSCs determined by TUNEL assay that stains apoptotic cells (white arrows, green). Blue (DAPI) indicates nuclei of hADSCs. (Scale bar indicates 100 μm) (c) Quantification of TUNEL-positive hADSCs per unit area (** p < 0.01 versus NT group, # p < 0.05 versus 9 μg/mL group).