The University of Laval of Laval, Canada, and the University of California of Oakland have received US Patent No. 8,534,319, "Serial siphon valves for fluidic or microfluidic devices." The devices described rely on a co-radial arrangement of serial siphon valves each separated by a capillary valve to save radial space in a fluidic system. Such serial siphon valves allow the sequential distribution of liquids in the system upon application of successive centripetal accelerations and decelerations applied to a rotary platform.

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US Attorney General Jeff Sessions is considering using DNA tests to determine relatedness between adult and child migrants, the Daily Caller reports.

Bloomberg reports that Brainstorm Cell Therapeutics plans to offer a treatment it is developing under the "right to try" law for hundreds of thousands of dollars.

In Nature this week: expansion of disease-resistance genes among long-lived oak trees, and more.

In a proof-of-concept study, researchers report being able to determine age from dried bloodstains, Discover's D-brief blog reports.