Some 11 percent of the cell culture-based projects housed in the NCBI Sequence Read Archive appear to be contaminated with mycoplasma, Anthony Olarerin-George and John Hogenesch from the University of Pennsylvania report.

Mycoplasma is often introduced accidentally into cell cultures by lab workers, and it cannot be killed by the antibiotics typically used to treat such cultures.

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The World Health Organization calls for the public release of clinical trial results within a year of the completion of data collection.

In Science this week: measles virus nucleocapsid structure, and more.

African and US health officials work to establish an Africa-wide Centres for Disease Control and Prevention.

Nature has retracted a 2002 epigenetics paper for image manipulation.