A blog post at Nature Medicine's Spoonful of Medicine blog this week describes a prototype of newly developed HIV test chip — a little bigger than a credit card — that analyzes blood samples in minutes and sends its results to doctors via the cloud, making it possible to diagnose HIV-infected people living in remote areas.

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In PNAS this week: human cytomegalovirus diversity, patterns of homologous recombination in E. coli, and more.

US lawmakers are considering eliminating the medical devices tax that is part of the Affordable Care Act.

Two research teams in China home in on a gene that gives rice a long, slender shape.

Marcia McNutt, the editor-in-chief of Science, has been nominated to become president of the US National Academy of Sciences.