By Justin Petrone

Longtime array rivals Affymetrix and Illumina last week introduced new chips targeting the exome, exonic variants in the protein-coding regions of the human genome.

Both firms believe that their respective exon arrays, scheduled to launch by the first quarter of 2012, will provide users with the ability to validate such variants in large sample numbers in a "fast and economical way."

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The US Food and Drug Administration has new guidelines that enable some gene and cell therapies to undergo expedited review, according to the New York Times.

Using gene drives to control invasive species might be too risky, an initial advocate of the approach says.

In Science this week: intellectual property experts argue patent battles such as the one over CRISPR are wasteful, and more.

Researchers have grown tumors in 3D cell cultures to better understand cancer, the Economist reports.