| brain dead | 2.96 | Brain dead. | ||
| brain surgery | 0.59 | The technology is not limited to brain surgery. | ||
| brain cell | 0.46 | Neural stem cells can form nerve and brain cells. | ||
| brain cancer | 0.26 | While she was in prison her husband died of brain cancer. | ||
| brain disease | 0.26 | Animal prion diseases are therefore brain diseases. |