This Week in Science

In Science this week, Eric Nestler and his team explore the epigenetics of cocaine addiction. They found that repeated cocaine exposure in mice is linked to decreased histone 3 lysine 9 dimethylation levels in the nucleus accumbens, a brain region involved in reward and pleasure circuitry.

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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.