| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| natural active and natural passive immunity | 1.64 | 0.5 | 3265 | 19 |
| what is a natural passive immunity | 1.48 | 0.4 | 4194 | 49 |
| explain natural passive immunity | 1.07 | 0.4 | 5647 | 67 |
| passive and natural immunity | 0.84 | 0.3 | 6811 | 4 |
| active passive artificial natural immunity | 1.72 | 0.6 | 3917 | 37 |
| natural passive immunity definition | 1.82 | 0.8 | 662 | 47 |
| naturally acquired active immunity vs passive | 1.76 | 0.6 | 7337 | 88 |
| natural acquired active and passive immunity | 1.73 | 0.1 | 2923 | 24 |
| natural vs active immunity | 0.82 | 0.4 | 7744 | 23 |
| natural immunity vs active immunity | 1.75 | 0.1 | 4629 | 39 |
| natural and artificial passive immunity | 0.15 | 0.4 | 7669 | 86 |
| passive natural adaptive immunity | 0.72 | 0.1 | 8756 | 41 |
| natural active immunity vs natural passive | 1.02 | 0.2 | 895 | 43 |
| example natural passive immunity | 1.51 | 0.1 | 4542 | 35 |
| natural acquired passive immunity | 0.62 | 0.2 | 3607 | 96 |
