MONACO -- The Russian doping crisis that rocked track and field in the 2010s reached a symbolic end Friday with bans and disqualifications for 12 athletes in a final set of disciplinary cases going back over a decade.

The Athletics Integrity Unit, which was founded in 2017 as part of track's response to the doping crisis, said this was the "last batch" of proceedings using data from the shuttered Moscow anti-doping laboratory where cases were covered up.

Going through that mountain of data has meant years of work for the AIU and other anti-doping bodies.

They prioritized cases involving active and high-profile athletes, so the 12 named Friday were long-since retired athletes or relatively obscure figures. The best known was arguably Elena Kotulskaya, the European indoor silver medalist

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