1.   Tests have revealed traces of poison in his food.

2.   Sections of the aircraft had already been recovered and tests revealed traces of explosives in seat cushions and luggage.

3.   An examination of previous pictures of brown dwarfs taken by the Hubble Space Telescope revealed faint traces of the disks, which had been overlooked.

4.   His next urine test revealed traces of cocaine.

5.   The liquid, which must be applied in total darkness, will glow to reveal any traces of blood.

6.   To his surprise, and dismay, results of lab analysis revealed traces of marijuana.

7.   A blood test on the Portuguese chauffeur did not reveal any traces of alcohol.

8.   A survey of Stanton Drew in Somerset, southwest England, has revealed traces of one of the largest and most elaborate prehistoric ceremonial sites ever found in Britain.

9.   Back in October, another sample taken on the training ground revealed traces of amphetamine.