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This Week in PNAS

In the early, online edition of the Proceedings of the National Academy of Sciences, an international team describes genetic variants that dial down the risk of conditions such as attention deficit hyperactivity disorder but bump up the euphoric effects associated with the drug d-amphetamine.

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Australia will not be regulating gene editing of plants, animals, and human cell lines as long as no new genetic material is incorporated, reports Nature News.

The Washington Post reports that the US Department of Agriculture told its researchers to label peer-reviewed articles as "preliminary" work.

Researchers have sequenced the genomes of both the coast redwood and the giant sequoia, according to the San Francisco Chronicle.

In PNAS this week: study of epigenetic patterns in mammalian eggs, clonal expansion patterns in CD8+ T cells, and more.