41.   While prion diseases are frightening, they say, the odds of coming into contact with them are extremely low for most Americans.

42.   All known prion diseases are invariably fatal.

43.   All known prion diseases are fatal.

44.   Mad cow is thought to have originated from cattle feed that included body parts from sheep that had been infected with scrapie, the prion disease in sheep.

45.   Prion diseases produce porous, spongy regions within the brain and are invariably fatal.

46.   CJD is one of a family of so-called prion diseases in which a rogue protein proliferates in the brain.