51.   Army scientists and the FBI said Friday that the substance was talc and contained no trace of the deadly bacteria.

52.   Bioterrorism is the release of deadly bacteria, viruses or products of those agents.

53.   Casey Martin had surgery to remove potentially deadly bacteria from his withered right leg.

54.   Cholera is a deadly bacteria that flourishes in human waste and spreads quickly in crowded areas with poor sanitation.

55.   Deputy Prime Minister Alexander Zaveryukha said the ban would not be lifted until American poultry producers take steps to eliminate salmonella, a sometimes deadly bacteria.

56.   E. coli is a potentially deadly bacteria that can cause bloody diarrhea and dehydration.

57.   Duff said all but two employees were evacuated from the building while federal investigators tried to analyze the letter and determine if it were filled with the deadly bacteria.

58.   Duff said all but two employees were evacuated from the building while federal investigators analyzed the letter to determine if it was filled with the deadly bacteria.

59.   Final tests overnight at a Berlin lab of the Robert Koch Institute found no trace of the deadly bacterium in mail received in the two states.

60.   He said the central government would join local authorities in trying to pinpoint how the deadly bacteria found its way to so many people.