Biopsy Troubles

A personalized medicine study has run into an unexpected issue: tumor biopsies that aren't good enough to undergo genetic analysis, Stat News reports.

Between 10 percent and 20 percent of the needle biopsies collected for the National Cancer Institute MATCH trial, which began in August, are of poor quality and contain few tumor cells, it adds.

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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.