Fig. 13

Inhibition zone diameter (mm) of (A) E. coli, (B) S. typhi, (C) P. aeruginosa, (D) S. aureus, and (E) B. cereus treated with antibiotics compared with nanopropolis, ZnO-NPs, and ZnO-propolis. Vertical bars represent the means ± standard deviation (SD) of three replicates (n = 3).