21.   Four years ago, Terry Singeltary watched his mother die horribly from a degenerative brain disease.

22.   Great Britain now shares with Papua New Guinea the sad distinction of being the locus of an unusually cruel and fatal brain disease.

23.   Have they not yet contracted the brain disease?

24.   He got interested in its subject, fatal brain diseases, before there were any reports about human beings dying of mad cow disease in England.

25.   If so, several experts said, it may overturn ideas about how the human brain works and open new possibilities for treating degenerative brain diseases.

26.   In response to questions from Winfrey, Lyman talked about the potential for Americans being struck with the brain disease from infected U.S. cattle.

27.   Is it at bottom a brain disease?

28.   Jones said his aides, who had defended Harris in both murder trials, thought he suffered from organic brain disease.

29.   Mad cow disease is even more frightening, causing a uniformly fatal brain disease that can kill years after victims ingest contaminated food.

30.   Mad cow, a degenerative brain disease is fatal to humans.