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Published online 1 August 2006 | Nature | doi:10.1038/news060731-4
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Isotopes help pin down artificial testosterone
As two sporting stars undergo doping tests, news@nature.com finds out whether cheaters can really be caught.
What has happened?
In the past week, cyclist Floyd Landis and sprinter Justin Gatlin have both been singled out by doping tests - not for any new-fangled drug, but for the old-fashioned sex hormone testosterone. Landis made a spectacular comeback in the 17th leg of the Tour de France to take first place in the famous cycle race.
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