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A Grid framework has been therefore adopted due to the necessity of remotely accessing large amounts of distributed data as well as to scale computational performances for terabyte datasets. Two different biological studies have been planned in order to highlight the benefits that can emerge from our Grid based platform. The described environment relies on storage services and computational services provided by the gLite Grid middleware. The Grid environment is also able to exploit the added value of metadata in order to let users better classify and search experiments. A state-of-art Grid portal has been implemented in order to hide the complexity of framework from end users and to make them able to easily access available services and data. The functional architecture of the portal is described. As a first test of the system performances, a gene expression analysis has been performed on a dataset of Affymetrix GeneChip<jats:sup>\u00ae<\/jats:sup> Rat Expression Array RAE230A, from the ArrayExpress database. The sequence of analysis includes three steps: (i) group opening and image set uploading, (ii) normalization, and (iii) model based gene expression (based on PM\/MM difference model). Two different Linux versions (sequential and parallel) of the dChip software have been developed to implement the analysis and have been tested on a cluster. From results, it emerges that the parallelization of the analysis process and the execution of parallel jobs on distributed computational resources actually improve the performances. Moreover, the Grid environment have been tested both against the possibility of uploading and accessing distributed datasets through the Grid middleware and against its ability in managing the execution of jobs on distributed computational resources. Results from the Grid test will be discussed in a further paper.<\/jats:p>","DOI":"10.1186\/1471-2105-8-s1-s7","type":"journal-article","created":{"date-parts":[[2007,3,8]],"date-time":"2007-03-08T19:03:20Z","timestamp":1173380600000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["A Grid-based solution for management and analysis of microarrays in distributed experiments"],"prefix":"10.1186","volume":"8","author":[{"given":"Ivan","family":"Porro","sequence":"first","affiliation":[]},{"given":"Livia","family":"Torterolo","sequence":"additional","affiliation":[]},{"given":"Luca","family":"Corradi","sequence":"additional","affiliation":[]},{"given":"Marco","family":"Fato","sequence":"additional","affiliation":[]},{"given":"Adam","family":"Papadimitropoulos","sequence":"additional","affiliation":[]},{"given":"Silvia","family":"Scaglione","sequence":"additional","affiliation":[]},{"given":"Andrea","family":"Schenone","sequence":"additional","affiliation":[]},{"given":"Federica","family":"Viti","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2007,3,8]]},"reference":[{"issue":"2","key":"1867_CR1","doi-asserted-by":"publisher","first-page":"113","DOI":"10.1093\/bioinformatics\/17.2.113","volume":"17","author":"A Brazma","year":"2001","unstructured":"Brazma A: On the importance of standardization in life sciences. 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