AdvertisementDoping Trial May Reach Far Beyond Spain, And Cycling03:56Download AudioResumeFebruary 18, 2013Lauren FrayerfacebookEmailDr. Eufemiano Fuentes, accused of masterminding a vast doping network, has refused to name his clients. The case stems from a 2006 raid in which Spanish police seized some 200 bags of blood, in the "Operation Puerto" investigation. (AFP/Getty Images)