Contador case splits experts' opinions

Alberto Contador, Tour de France 2010, stage 15

Alberto Contador has received backing from one top scientific expert over his clenbuterol and plasticizers - plastic residues -  cases on Wednesday, but at the same time another scientist has asserted that the plasticizers at least could be indicative of doping.

Traces of plasticizers were allegedly present in Contador's blood sample on July 20 - although the rider has not been officially notified of this - whilst clenbuterol has been confirmed as present on two days, July 21 and July 22, in one of Contador's urine samples. All of the tests were carried out by a German laboratory, in Cologne, after which somebody  decided to leak the results to the media.

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