11.   Other Europeans say they continue to eat meat because stringent rules are in place to keep infected cows out of the food supply.

12.   Scientists contend that cattle in Britain were infected after eating feed that contained parts of other infected cows.

13.   The disease presumably jumped to people who ate infected cow brains.

14.   The latest infected cow showed no outward signs, such as staggering, of mad cow disease.

15.   The original source of the infection is probably from the importation of infected cows or cow feed from Europe.

16.   They say the technique could work equally well in infected cows.

17.   Two years ago researchers showed that the brains of infected cows and the brains of young people dying from CJD have identical characteristics.

18.   Until November, the government simply buried infected cows.

19.   When the disease is contracted from eating meat from infected cows, as has occurred in Britain and other parts of Europe, it is called variant CJD.

20.   People who eat brain or nerve tissue from infected cows are believed to be at risk for a human form of the disease, called variant Creutzfeldt-Jakob.