| severely | 2 | degree |
| collagen → be → damaged | 14 |
| collagen → cause → damage | 4 |
| collagen → be damaged by → other environmental factors | 4 |
| negative | neutral | positive |
| 0.553 | 0.304 | 0.143 |
| Raw frequency | 22 |
| Normalized frequency | 0.262 |
| Modifier score | 0.500 |
| Perplexity | 271.100 |