| from continuous immortal cell lines | 7 | other |
| in chicken eggs | 6 | location |
| on aborted fetal tissue | 3 | location |
| vaccine → be → cultured | 21 |
| negative | neutral | positive |
| 0.451 | 0.499 | 0.050 |
| Raw frequency | 21 |
| Normalized frequency | 0.265 |
| Modifier score | 0.717 |
| Perplexity | 463.535 |