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Nat Genet. 2002 Dec;32 Suppl:502-8.

From patterns to pathways: gene expression data analysis comes of age.

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  • 1Department of Genomics, Wyeth Research, 35 Cambridge Park Drive, Cambridge, Massachusetts 02140, USA.


Many different biological questions are routinely studied using transcriptional profiling on microarrays. A wide range of approaches are available for gleaning insights from the data obtained from such experiments. The appropriate choice of data-analysis technique depends both on the data and on the goals of the experiment. This review summarizes some of the common themes in microarray data analysis, including detection of differential expression, clustering, and predicting sample characteristics. Several approaches to each problem, and their relative merits, are discussed and key areas for additional research highlighted.

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