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Here's a piece from Technology Review about how scientists are putting DNA sequences to work as odor detectors. "Scientists have found a way to quickly identify which DNA sequences are ideal for detecting a particular odor," the story says. A researcher talks about putting those sequences on a microarray to conduct high-throughput smell-sensing. Such a system could be used to detect toxins, explosives, and a wide range of chemicals, according to the article.

 

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