11.   Infected cattle spread the bacteria by coughing, bellowing and snorting in the confines of a feedlot or pasture.

12.   It is found in the brains, spinal cords and some other parts of infected cattle and, theoretically, in sheep and goats that have eaten contaminated feed.

13.   Later investigations revealed a smuggling operation that brought in infected cattle from Northern Ireland.

14.   Nobody suggests that mad cow disease has infected American cattle herds.

15.   Some officials speculated people were getting CJD from eating the meat of infected cattle.

16.   The government would begin a trace of the feed eaten by the infected cattle and quarantine other cattle that received the feed.

17.   The vaccine traditionally consisted of pus from infected cattle.

18.   Their results showed that the number of infected cattle was far larger than previous tests indicated.

19.   Until this year, veterinarians in Texas were only permitted to burn infected cattle in commercial incinerators, not open pits.

20.   What is still not known for sure is whether the disease can also be contracted by eating beef from infected cattle.