Some 280 million cases of giardiasis occur in the world each year and its infectivity is due to its "genomic wardrobe," according to this New York Times story. Biologists led by Hugo Luján at the Catholic University of Córdoba in Argentina have discovered that the parasite uses RNAi to silence expression of all but one of its 190 coat proteins to confer resistance to immunity.

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Researchers test gene therapy targeting a different cancer protein in a new trial, the New York Times reports.

Pennsylvania State University researchers found that salivary microRNAs could predict which kids would have longer concussion symptoms, according to NPR.

The Associated Press reports Alex Azar, the new Department of Health and Human Services secretary nominee, made millions of dollars as a pharmaceutical executive.

In PNAS this week: immune profiling of breast cancer, transposable element patterns in rice, and more.