| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| immunity system definition | 1.78 | 0.3 | 9425 | 34 | 26 |
| immunity | 1.35 | 0.8 | 3370 | 19 | 8 |
| system | 0.19 | 0.2 | 8784 | 69 | 6 |
| definition | 0.65 | 0.1 | 5880 | 5 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| immunity system definition | 0.95 | 0.8 | 6498 | 46 |
