Seven-time Tour de France winner Lance Armstrong has dismissed disgraced cyclist Floyd Landis's allegations that he and other members of the U.S. Postal Service cycling team were involved in blood doping between 2002 and 2005.
"If you said, 'Give me one word to sum this all up,' credibility. Floyd lost his credibility a long time ago," The New York Post quoted Armstrong, as saying.
"We have nothing to hide. We have nothing to run from," he added.
Armstrong has often been accused by his rivals and critics of cheating, but has never officially failed a doping test.
"I'm not going to waste my time or your time. It's our word against his word. I like our word. We like our credibility," Armstrong said. Earlier, it was reported that Landis had sent a series of e-mails to cycling officials and sponsors last month, outlining an elaborate doping program underpinning the cycling team.
In his mails, Landis described injection of banned drugs, use of testosterone patches, and blood transfusions.
Landis also wrote about his experience in 2004, and revealed that on their journey back from a race the cyclists were given blood transfusions to boost their oxygen capacity.
"The driver pretended to have engine trouble and stopped on a remote mountain road for an hour or so the entire team could have half a litre of blood added," Landis wrote.
"This was the only time that I ever saw the entire team being transfused in plain view of all the other riders and bus driver," he added.
Armstrong is alleged in the letter by Landis to have participated in that and many other instances of doping.
Landis also claims that Armstrong and longtime coach Johan Bruyneel paid an International Cycling Union official to cover-up a test in 2002 after Armstrong purportedly tested positive for the blood-boosting drug EPO.