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On his blog, Mike the Mad Biologist tries to figure out why some scientists do not use positive and negative controls in their experiments. He points to a 2004 study that found 91.3 percent of Streptococcus pneumoniae had a TEM-1 beta-lactamase resistance gene, but was run without adequate negative controls.

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A South African university has told the Wellcome Sanger Institute to return DNA samples it has from indigenous African communities, The Times reports.

The University of California, Berkeley's Rasmus Nielsen and Xinzhu Wei have retracted their CCR5 gene paper due to a technical artifact.

 

University of Virginia researchers are exploring a genetic risk test to gauge type 1 diabetes risk, NPR reports.

In PNAS this week: researchers compare two high-grade neuroendocrine lung cancers, height among ancient Europeans, and more.