On the other hand they also find themselves at pains to explain that one of television's fictional devices an unequivocal match between a trace of a substance found at a crime scene and an exemplar stored in a database, whether it be fingerprints, DNA or some other kind of evidence is indeed generally just fiction.

ECONOMIST: Forensic science

The fact that humans can ingest the substance inadvertently by eating beef is putting pressure on Wada's rules, which deem the slightest trace to be a doping infringement.

BBC: Ban on clenbuterol doping drug may be relaxed