51.   Officials for the FBI and the US Attorneys office said they could neither confirm nor deny the existence of any probe.

52.   One factor is the tendency of many doctors to deny existence of the side effects, Cooper said.

53.   Or must they deny its existence?

54.   People speaking for the federal prosecutors in Dallas and Boston declined to confirm or deny the existence of any investigations.

55.   Selig denied the existence of any link between any previous negotiation and this one.

56.   Smith and his attorneys have denied the existence of such an agreement.

57.   Since then, everyone on both sides has denied the existence of a deal.

58.   Smith has consistently denied the existence of such an agreement and has vehemently denied that he has had sexual contact with the two men.

59.   So secree base that the U.S. government denies its existence.

60.   Speaking at a press conference Friday, Reno did not deny the existence of U.S. intelligence gathering on the men but she downplayed its significance.