21.   Argentina has reason to worry about mad cow disease.

22.   As a result, researchers in the United States stepped up their efforts to monitor for both mad cow disease and the new variant of Creutzfeldt-Jakob disease.

23.   At press time, there have been no reports of either mad cow disease or vCJD yet in the United States.

24.   At first seemingly confined to England, mad cow disease has turned up in France, the Netherlands and elsewhere, but never in the United States.

25.   At the same time, the Agriculture Department continues to monitor American cows for signs of mad cow disease.

26.   Authorities at Logan Aiport, anxious about mad cow disease, will confiscate it.

27.   B.S.E., known popularly as mad cow disease, converts in humans into a variant of Creutzfeldt-Jakob disease.

28.   Because the cause of mad cow disease seems rooted in contaminated feed, cases have been found on small farms as well as large industrialized farms.

29.   Brains, in particular, are the source of much of the concern outside Japan about bovine spongiform encephalopathy, or mad cow disease.

30.   A European Union report found France has failed to properly impose controls on cattle feed agreed to in the wake of the mad cow disease scare.