The blogosphere is buzzing with the news that the FDA is finally cracking down on direct-to-consumer genetic tests, treating them as if they were medical devices and informing companies that sell them that they are selling medical devices without FDA approval. The New York Times' Andrew Pollack says the FDA has sent letters to five companies last week, saying they must have regulatory approval before selling the DTC tests.

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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.