Figure 4.

Disk Diffusion Assay. Effect of NPs used alone and in synergistic combination with (A) carbenicillin against P. aeruginosa and (B) ampicillin against S. pseudintermedius. Statistical analysis showed differences between inhibition halos of silver nanoparticles alone and those of silver in combination with carbenicillin and ampicillin. In S. pseudintermedius strains, EcAgNPs have a larger antibacterial effect compared to ClAgNPs. Results are presented as mean ± SD (* p value: 0.05–0.01; ** p value: <0.01; *** p value: <0.001).