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. 2020 Apr 15;10(12):5565–5577. doi: 10.7150/thno.43569

Figure 2.

Figure 2

Magnetic and cellular characterization of Fe3O4-CS/KGN. A) T2-weighted MR images of different Fe3O4-CS /KGN concentrations in vitro (Fe concentrations), * P < 0.05, ** P < 0.01, ***P < 0.001, ns: not significant; B) 1/T2 against Fe concentrations; C) the CCK-8 cell toxicity assays in the presence of different Fe3O4-CS /KGN or KGN concentrations; D) confocal images of ADSCs exposed to 20 μg/mL Fe3O4-CS/calcein or free calcein at 6 h, 12 h and 24 h (all scale bars are 25 μm); E) fluorescence quantification of the internalization by ADSCs after 6 h, 12 h and 24 h incubation (n = 10).