| prion disease | 3.03 | All known prion diseases are fatal. | ||
| prion protein | 2.11 | Normal prion protein is produced by a gene that is widely found in nature. | ||
| prion gene | 0.46 | What about the prion gene? | ||
| prion hypothesis | 0.46 | There is no direct evidence of the prion hypothesis. | ||
| prion infection | 0.26 | Prion infection did not reappear for three weeks, the interval used to define a cure in this kind of laboratory experiment. |