This Week in Nature

HHMI researcher Vivian Cheung led a study that looked at gene expression differences among people in response to exposure to radiation. In performing genetic linkage and association studies to map regulators of different gene expression phenotypes, the researchers found that for more than 1,200 of these, there was linkage to a specific chromosome region and that nearly all of the regulators are trans-acting. Their work was published in early online.

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The apple has traveled westward and eastward along the Silk Road, according to a new genetic analysis.

In Nature this week: GWAS data used to reposition drugs for psychiatric use, and more.

Genetic disease risk information doesn't always spur people to make healthy lifestyle changes, according to the Associated Press.

A University of California, San Diego-led team has used liquid biopsies to uncover possible treatments for patients with cancers of unknown primary.