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This Week in PNAS

Using molecular techniques, scientists led by Harvard's Jacob Russell and Corrie Moreau have studied gut microbes in ants to find patterns of symbiosis. Surveying 283 species from 18 of the 21 ant subfamilies, they found "a wealth of bacteria from across the ants." Herbivorous "turtle ants" often had symbiotic bacteria from clades within the Burkholderiales, Pseudomonadales, Rhizobiales, Verrucomicrobiales, and Xanthomonadales.

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The US Patent and Trademark Office is opening another interference proceeding in the CRISPR patent fight.

There's increasing genetic evidence that a number of ancient hominins may have contributed to the human gene pool, according to Discover's The Crux blog.

The Japan News writes that Japan needs to seize the opportunity to ensure that a wide number of people benefit from personalized cancer treatments.

In Cell this week: messenger RNA expression and translation, RNA localization atlas, and more.