Genomic testing of cancer tissues obtained from a biopsy can give clinicians and patients a window into the genetic changes that have occurred in the tumor and, possibly, highlight potential treatments, writes Elaine Schattner at Forbes. However, she notes, such analysis isn't routine and can be difficult to come by.

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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.