This Week in PNAS

In the early, online edition of the Proceedings of the National Academy of Sciences, an international research team catalogs the microRNAs present in more than a dozen human cell types. The researchers did short RNA sequencing on more than 1,300 samples representing 13 tissue types. Using this data, they tallied up more than 3,700 miRNAs not described previously, classifying new and known miRNAs based on their tissue-specificity.

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New results from the NASA Twins Study indicate that the immune system may rev up when in space, the Washington Post reports.

Kelvin Droegemeier, the new science advisor, spoke at the American Association for the Advancement of Science meeting, Geekwire reports.

In PNAS this week: whole-genome assembly for the white shark, paper-based microfluidic method for detecting the malaria parasite, and more.

The World Health Organization has announced the members of its gene-editing committee, according to NPR.