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Armstrong allegations

CLEAN: Armstrong, leaving the anti-doping car during the 2005 Tour de France, never failed a drug test. (Sebastien Berda AFP/Getty Images)
FORMER TEAMMATES: Armstrong is interviewed by Frankie Andreu before Stage 1 of the 2002 Tour. Later, Andreu testified that Armstrong admitted in 1996 using performance-enhancing drugs. (Mike Powell / Getty Images)
GOING FOR TWO: Lance Armstrong, in the leader’s yellow jersey, rides with U.S. Postal teammates, from left, Frankie Andreu, Kevin Livingston and Vjatceslav Ekimov during the 2000 Tour de France. (Mike Powell / Getty Images)
THE WINNER: Lance Armstrong, who came out of nowhere in 1999, ruled the Tour de France a record seven consecutive times. (Franck Fife AFP/Getty Images)
ANGRY REBUTTAL: Lance Armstrong, shown during the 2003 Tour de France, denies the claims of Betsy Andreu concerning a conversation in a hospital room in 1996. (AP)
Cyclist Lance Armstrong pauses during a news conference in Augusta, Ga., where he announced he will retire from the sport after the 2005 Tour de France. (AP / John Bazemore)