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 have sequenced the northern white rhinoceros to gauge whether it could be brought back from the edge of extinction, the New York Times reports.

Bavaria expands its forensic genetic analyses to include DNA phenotyping, raising discrimination concerns.

Tufts University researchers found a role for miRNA in transmitting stress between generations, the Economist reports.

In Science this week: gut microbiome influences liver cancer growth, spread; and more.