Lance Armstrong has launched legal action against the US Anti-Doping Agency in the wake of the body charging him with using performance-enhancing drugs.
The seven-time Tour de France winner was charged by the USADA last month.
Armstrong has accused the USADA of offering "corrupt inducements" to other cyclists to testify against him and operating a "kangaroo court".
USADA has insisted Armstrong's lawsuit is "without merit".
The organisation has stated that 10 former teammates of Armstrong will testify against him.
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