11.   Her showing has evoked insinuations that she may use performance-enhancing drugs, even though mandatory testing so far has found her clean.

12.   Initial results released Wednesday proved negative and the Department for Environment, Food and Rural Affairs said Sunday more exhaustive testing had found no trace of the virus.

13.   Scientific testing has not found any trace of brush strokes to indicate the figure is a painting, as skeptics claim.

14.   The new MRI testing found a huge brain area starved for blood, about to die.

15.   The virus itself was not detected in the three samples -- numbering several dozen mosquitoes -- but extremely sensitive testing found its genetic source.