NEW YORK, April 2 - One of the biggest pitfalls in analyzing microarray data is the process of normalizing gene expression levels across two or more chips, or removing systematic variation between the chips when comparing different experiments, researchers have said.

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Cancer researcher Alan Rabson has died at 92, the New York Times reports.

As the National Guideline Clearinghouse goes dark, the ECRI Institute says it will pick up the slack.

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The Atlantic reports on private Facebook support groups for people who receive unexpected parentage results from direct-to-consumer genetic tests.