| for use in regenerative medicine | 12 | purpose |
| relatively | 5 | degree |
| to date | 2 | temporal |
| stem cell → be → safe | 45 |
| stem cell → be safe to → use | 4 |
| stem cell → be likely to → be safe | 3 |
| negative | neutral | positive |
| 0.079 | 0.387 | 0.534 |
| Raw frequency | 52 |
| Normalized frequency | 0.576 |
| Modifier score | 0.500 |
| Perplexity | 86.738 |