Hold the Arsenic

When NASA astrobiologist Felisa Wolfe-Simon released a study in December 2010 that described a bacterium that seemed to grow on arsenic and incorporate it into its DNA, researchers were at first amazed. Some, however, were skeptical, and tried to replicate Wolfe-Simon's work.

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A research duo estimates in PLOS One the number of papers that have used misidentified cell lines.

UK's National Institute for Health and Care Excellence approves GlaxoSmithKline's SCID gene therapy despite cost.

Science reports that Brazilian researchers are petitioning for the reversal of budget cuts.

In PLOS this week: gene flow patterns in common ash, guidelines for using morpholinos in zebrafish, and more.