Affymetrix has been awarded US Patent Number 6,403,957, “Nucleic acid reading and analysis system.” The invention disclosed involves a method and device for building sequences on a substrate by attaching “photoremovable” groups of amino acids and then selectively exposing them to light. A monomer is also added to bind at the selected areas on the substrate. In essence, this patent describes a form of the photolithography that the company uses to build its microarrays.

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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.

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

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