Most microarray manufacturers, such as Affymetrix and Agilent, provide commercial data analysis software alongside their microarray products. National Center for Toxicological Research scientist reviews microarray data Companies exist that use the MAQC protocols to perform a complete analysis. Changing any one of the steps will change the outcome of the analysis, so the MAQC Project was created to identify a set of standard strategies. It involves several distinct steps, as outlined in the image below. Samples undergo various processes including purification and scanning using the microchip, which then produces a large amount of data that requires processing via computer software. Microarray data analysis is the final step in reading and processing data produced by a microarray chip. Data in such large quantities is difficult - if not impossible - to analyze without the help of computer programs. Such experiments can generate very large amounts of data, allowing researchers to assess the overall state of a cell or organism. Microarray analysis techniques are used in interpreting the data generated from experiments on DNA ( Gene chip analysis), RNA, and protein microarrays, which allow researchers to investigate the expression state of a large number of genes - in many cases, an organism's entire genome - in a single experiment. Example of an approximately 40,000 probe spotted oligo microarray with enlarged inset to show detail.
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