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Epidemiologists have shown data that epigenetic marks are caused by environmental influences during early development, and that they can effect phenotypic expression throughout one's lifetime. In work published this week in PNAS, they used mass spec analysis to measure DNA methylation across a sample of 60 people who were prenatally exposed to famine during the Dutch Hunger Winter in 1944-45.

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A South African university has told the Wellcome Sanger Institute to return DNA samples it has from indigenous African communities, The Times reports.

The University of California, Berkeley's Rasmus Nielsen and Xinzhu Wei have retracted their CCR5 gene paper due to a technical artifact.

 

University of Virginia researchers are exploring a genetic risk test to gauge type 1 diabetes risk, NPR reports.

In PNAS this week: researchers compare two high-grade neuroendocrine lung cancers, height among ancient Europeans, and more.