NASC operates an Affymetrix 'GeneChip' (microarray) service for the Arabidopsis thaliana community. All data produced by the service are publicly available through our microarray data base 'NASCArrays' published at http://affymetrix. arabidopsis.info. The data are accessible through text searching and a series of data mining tools. All data are annotated with sample preparation details, and the original Affymetrix data are available for download. The database aims to be MIAME supportive and provide a coordinated resource for re searchers interested in the transcriptome of Arabidopsis. Using this database, data produced will be shared with other databases worldwide.

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A comprehensive Arabidopsis genomic resource has been developed at the Nottingham Arabidopsis Stock Centre (NASC) to support the international plant community. This browser, termed AtEnsembl, provides a detailed and user-friendly interface for accessing a wide range of Arabidopsis-based genomic information and post-genomic resources using the Ensembl browser. The resource aims to provide the broadest possible range of Ensembl features, including pointers to germplasm as well as representations of gene and protein information, links to Affymetrix gene expression data, and extensive data download capabilities.

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