Not Yet Perfection

As non-invasive prenatal tests for genetic abnormalities are adopted in the clinic, the Wall Street Journal says that there may be confusion among doctors and patients regarding what the results of those tests mean. In fact, the Journal points out, the American College of Genetics and Genomics is working on a statement urging such tests to be called "screens" to emphasize that they predict risk rather than give definitive results.

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In PLOS this week: phylogenetic study of hepatitis E viruses in Swedish moose, recombination sites in the honeybee genome, and more.

Differences in DNA methylation could be used to distinguish between DNA samples obtained from identical twins, researchers say.

A retrovirus that's been integrated into the human genome appears to have a role in embryonic development, researchers report.

A report from MIT identifies areas of scientific research where declining research support is hindering needed advances.