This Week in Science

In Science Translational Medicine this week, a Harvard University-led team reports a new test for pancreatic ductal adenocarcinoma (PDAC) that performs better than currently available diagnostics. The researchers used a multiplexed plasmonic assay to analyze circulating tumor-derived extracellular vesicles and identify a signature of five protein biomarkers that could be used to diagnose the disease with 86 percent sensitivity and 81 percent specificity.

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Direct-to-consumer genetic testing companies have offered to test families separated at the southern US border, but that raises ethical issues.

The New York Times reports on a project to develop a tree DNA database to uncover illegal logging.

CNBC reports that confirming a positive result from 23andMe's BRCA health report can be expensive.

In PLOS this week: links between gut microbiome and colorectal cancer mutations, targeted sequencing uncovers genetic susceptibilities to epilepsy in Koreans, and more.