In its new HG-U133 human genome array set, Affymetrix has reduced the entire genome to two chips. These chips contain about 45,000 probe sets for 39,000 unique transcripts and 33,000 genes, compared to 60,000 probe sets on the previous five-chip U95 set. Do the math, and you realize that the high priest of high density arrays has nearly doubled the data available per chip, to 22,500 probe sets from 12,000.

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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.