| an open area of research | 3 | location |
| stem cell → be found in → the brain | 15 |
| stem cell → be found in → brain | 11 |
| stem cell → reside in → the brain | 5 |
| stem cell → exist in → the brain | 4 |
| stem cell → be found inside → actual brain tissue | 3 |
| negative | neutral | positive |
| 0.119 | 0.792 | 0.089 |
| Raw frequency | 38 |
| Normalized frequency | 0.512 |
| Modifier score | 0.650 |
| Perplexity | 24.326 |