NEW YORK (GenomeWeb News) – Shares of CombiMatrix were up 20 percent in Thursday afternoon trade after the firm put out a statement pointing to a new recommendation from the American College of Obstetricians and Gynecologists that chromosomal microarray analysis should be the first-line genetic test in pregnancies where ultrasound screens uncover signs of fetal abnormalities.

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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.

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