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Antibacterial effects of the cobalt nanoparticles using well diffusion method.
| Bacterial type | Mean±SD of inhibition zone diameters (mm) at different Co NP concentrations | ||
|---|---|---|---|
| 50 μg/ml | 100 μg/ml | 150 μg/ml | |
| Proteus spp. | 10.26±0.15 | 20.3±0.15 | 12.26±0.15 |
| Staphylococcus aureus | 11.5±0.1 | 15.8±0.1 | 13.2±0.1 |
| Escherichia coli | 13.23±0.15 | 22.2±0.1 | 15.16±0.5 |
