Gene information for selected probe sets is appended to the results table. The annotations can include information such as GenBank accession numbers, UniGene ID, Locus Link IDs, BLAST hits, chromosomal locations and more. In addition, the probe set or spot descriptions have hyperlinks to websites such as UniGene Resources. Gene lists for the Mu11KsubA, Mu11KsubB, Hu6800, MG-U74av2, HG-U95av2 and RG-U34a Affymetrix chips are available for download as additional data files with this article or from [23].