This Week in PNAS

A study in the early, online edition of the Proceedings of the National Academy of Sciences suggests relationships forged through co-evolution between Helicobacter pylori bugs and their human hosts can significantly influence gastric disease risk. Researchers from the US and Colombia assessed genotyping patterns in pathogen and host blood samples taken from almost 250 individuals in two parts of Colombia with disparate gastric cancer rates but comparable H.

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Researchers describe a way to share data while keeping it secure, Agence France Presse reports.

In Science this week: genetic mutations typically associated with esophageal cancer are common in older, healthy individuals, and more.

India's Council of Scientific and Industrial Research has a new director-general, according to ScienceInsider.

A new study links more than a hundred genes to autism spectrum disorder, Discover's D-brief blog reports.