Figure 7: The antibacterial effect of Fe3O4@PDA@PAMAM@NONOate. Note: (A, B) Viability of Escherichia coli (E. coli) (A) and Staphylococcus aureus (S. aureus) (B) treated with Fe3O4@PDA@PAMAM-G3 and Fe3O4@PDA@PAMAM@NONOate under different laser irradiation conditions. (C) Colony formation of E. coli and S. aureus under different treatments. (D) Colony formation of E. coli and S. aureus treated with different concentrations of Fe3O4@PDA@PAMAM@NONOate. PDA: Polydopamine; PAMAM: poly(amidoamine); NONOate: N-diazeniumdiolate. Reprinted with permission from Yu et al.