Fig. 3

Antibacterial activity of hydrogels and PB nanozymes. (A) and (C) Photographs of plates showing the bacterial colony formation assay in the presence or absence of red light irradiation. (B) and (D) Antibacterial ratio of bacterial colonies calculated from (A) and (C), respectively. (E) Representative field emission scanning electron microscopy (FE-SEM) images of bacteria after treatment. (F) Photographs of plates showing the bacterial colony formation assay after the S. aureus from the mice was inoculated in the culture plates. (G) Antibacterial ratio of bacterial colonies calculated from (F). *P < 0.05; **P < 0.01; ***P < 0.001; ****P < 0.0001; Data are presented as the means ± SDs (n = 3)