According to a special report by Marca, who examined the full report from the Operation Ilex doping investigation, professional cyclists may still be using some of the same techniques that allowed Lance Armstrong to avoid testing positive despite using performance-enhancing drugs throughout his Tour de France reign.
Operation Ilex investigated University of Extremadura professor Dr. Marcos Maynar who is accused of providing prohibited drugs to riders including Miguel Ángel López. Both insist the Colombian did not dope, with López pointing to his biological passport which he insists is clean.
