Fig. 4.
Biocompatibility of MNs. (A to C) The fluorescence images of (A) 3T3, (B) HaCaT, and (C) HUVECs incubated with MNs for different times. (D) The CCK-8 test of cell lines with MNs for different times. Scale bars: 100 μm. OD, optical density.
Biocompatibility of MNs. (A to C) The fluorescence images of (A) 3T3, (B) HaCaT, and (C) HUVECs incubated with MNs for different times. (D) The CCK-8 test of cell lines with MNs for different times. Scale bars: 100 μm. OD, optical density.