51.   Autopsies showed no trace of disease in any of the mice given the ovary grafts.

52.   Both samples showed traces of Norandrosterone.

53.   But the Canadian was asked to return the gold medal after a post-race test showed traces of marijuana in his urine.

54.   But police were unable to find Viroj to confirm the story and airport surveillance tapes showed no trace of the incident.

55.   CHICAGO -- A Chinese swimming world champion tests positive for steroids and several teammates have shown traces of the drug, the Chicago Tribune reports Wednesday.

56.   De La Hoya later appeared at a news conference showing no trace of the cut.

57.   Dobromir Karamarinov, secretary general of the Bulgarian Athletics Association, said tests after the event had shown traces of ephedrine.

58.   Erwin said the few pieces of her clothes recovered from the car showed traces of gasoline.

59.   Fuentes said laboratory tests on soil samples taken near the lake showed traces of chemicals used in making bombs.

60.   Health authorities said the package showed no traces of anthrax.