Figure 3.

Use of PBA for selective treatment on the basis of drug resistance. (A) Schematic illustration of PBA combined with chemotherapy and PDT to kill DR E. coli. (B) Typical SEM images of PBA modified with different amounts of CP. Viability of DS E. coli (C) and DR E. coli (D) incubated on PBA or PBA_{no ampicillin} with or without light irradiation. Statistical analysis was performed using the student’s two-tailed t test (**p < 0.01). (E) L929 cell viability after incubation with different concentrations of CP for 12 h. (F) The typical SEM images of E. coli after incubation with PBA.