This Week in PLoS

In PLoS Biology this week, investigators at the University of Toronto report that most "dark matter" transcripts are associated with known genes in the mouse and human genomes. Using a combination of RNA-seq information and data obtained from tiling arrays experiments, the team shows that most of the seqfrags — or transcribed regions outside known exons and non-coding RNAs — are within introns, "raising the possibility that they are fragments of pre-mRNAs," they write.

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Helix customers can purchase apps that interpret different aspects of their genome, Technology Review reports.

The New York Times reports that a number of companies and research institutes are pursuing gene therapies.

Salmon with shorter telomeres survive to make the trip back to their river homes, New Scientist reports.

In PLOS this week: vaginal microbiome composition, population patterns of Chagas-carrying Rhodnius ecuadoriensis, and more.