Table 1. The studied groups and design of the experiment .
| Group | Irradiation | Gold nanoparticles | |
| 1 hour per day | 2 hour per day | ||
| 1 | - | - | - |
| 2 | √ | - | - |
| 3 | - | √ | - |
| 4 | - | - | √ |
| 5 | √ | - | √ |
| 6 | - | √ | √ |
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