Janet Stemwedel discusses the ongoing objections surrounding a Cell paper from last June by Jeffrey Axelrod's group that reported on a transmembrane protein that plays a large role as a signaling molecule in planar cell polarity in Drosophila. The objection is that another group, led by Peter Lawrence, had already done that work.

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

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