NEW YORK (GenomeWeb News) – Aetna this week issued a clinical policy bulletin suggesting that it may soon begin covering non-invasive prenatal DNA tests for Down syndrome.

In its bulletin, the health insurer said that it "considers measurement of cell-free nucleic acids in maternal blood … medically necessary for testing for fetal aneuploidy (trisomy 13, 18, 21) in pregnant women with single gestations," who meet any one of a set of criteria.

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In Science this week: self-assembly of DNA components in solution, and more.

Genetics and Molecular Research retracts two gastric cancer papers for being "substantially equal" to other papers, according to Retraction Watch.

A new analysis indicates that the Ebola virus behind the current West African outbreak is mutating at about the same rate as other Ebola viruses.

With the launch of Scott Kelly into space today, the study of him and his earthbound brother to disentangle the effects of life in space from the effects of genetics kicks off.