Microarray data analysis: a practical approach for selecting differentially expressed genes |
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Authors: | David M Mutch Alvin Berger Robert Mansourian Andreas Rytz Matthew-Alan Roberts |
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Institution: | 1. Metabolic and Genomic Regulation, Nestlé Research Center, Vers-chez-les-Blanc, CH-1000, Lausanne 26, Switzerland 2. Applied Mathematics, Nestlé Research Center, Vers-chez-les-Blanc, CH-1000, Lausanne 26, Switzerland
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Abstract: | Background The biomedical community is rapidly developing new methods of data analysis for microarray experiments, with the goal of establishing new standards to objectively process the massive datasets produced from functional genomic experiments. Each microarray experiment measures thousands of genes simultaneously producing an unprecedented amount of biological information across increasingly numerous experiments; however, in general, only a very small percentage of the genes present on any given array are identified as differentially regulated. The challenge then is to process this information objectively and efficiently in order to obtain knowledge of the biological system under study and by which to compare information gained across multiple experiments. In this context, systematic and objective mathematical approaches, which are simple to apply across a large number of experimental designs, become fundamental to correctly handle the mass of data and to understand the true complexity of the biological systems under study. |
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