| in the immune system | 9 | other |
| very | 8 | degree |
| to life | 7 | other |
| chemical → be → essential | 37 |
| chemical → be → important | 30 |
| chemical → be → vital | 15 |
| chemical → be → critical | 13 |
| chemical → be → crucial | 8 |
| negative | neutral | positive |
| 0.177 | 0.589 | 0.234 |
| Raw frequency | 103 |
| Normalized frequency | 0.588 |
| Modifier score | 0.550 |
| Perplexity | 39.946 |