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This Week in PNAS

In the PNAS Early Edition this week, Stephen Quake and his colleagues at Stanford University report their development of a universal, non-invasive approach to monitor the health of transplanted organs that uses high-throughput shotgun sequencing to detect donor cell-free DNA circulating in recipients' blood. Quake et al.

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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.