A Concern

Science has asked the authors of the 2009 paper it published that associated chronic fatigue syndrome with the XMRV retrovirus to retract it, reports The Wall Street Journal. That article's findings prompted the American Red Cross to prohibit people with chronic fatigue syndrome from donating blood, Bloomberg adds.

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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.