| from the human flu virus | 7 | other |
| on outer shell | 3 | location |
| to prime the immune system | 3 | purpose |
| vaccine → contain → protein | 36 |
| vaccine → be based on → protein | 14 |
| vaccine → use → protein | 7 |
| vaccine → be made from → protein | 6 |
| vaccine → consist of → protein | 4 |
| vaccine → be → protein | 3 |
| vaccine → comprise → protein | 3 |
| vaccine → be composed of → protein | 3 |
| negative | neutral | positive |
| 0.266 | 0.631 | 0.103 |
| Raw frequency | 76 |
| Normalized frequency | 0.440 |
| Modifier score | 0.825 |
| Perplexity | 140.829 |