The addition of a gene expression test may help uncover athletes who've used performance-enhancing drugs, New Scientist reports.

A recent report leaked from the International Association of Athletics Federation suggests that some 800 out of 5,000 blood tests obtained from athletes could have had dodgy results and that nearly 150 Olympic or World Championship medal could hang in the balance, it notes.

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Dog DNA testing finds that some purebreds might not truly be purebreds, Inside Edition reports.

Mary Beckerle has returned as director of the Huntsman Cancer Institute, according to ScienceInsider.

Smithsonian Magazine reports that environmental DNA sampling can be used to track elusive organisms.

In Genome Research this week: repetitive satellite DNA in the fruit fly, transcriptome map assembly pipeline, and more.