| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| define the immune system | 0.08 | 0.6 | 8181 | 61 | 24 |
| define | 0.38 | 0.3 | 1224 | 73 | 6 |
| the | 0.69 | 0.4 | 1859 | 21 | 3 |
| immune | 0.5 | 0.5 | 3303 | 3 | 6 |
| system | 0.59 | 0.5 | 5839 | 11 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| define the immune system | 1.06 | 0.4 | 2226 | 2 |
