All publicly available porcine expressed sequences were assembled to create longer, fuller transcripts for annotation purposes. The longer sequences were then used as queries in sequence alignment and comparison software to transfer functional annotation from their homologues in other species. In addition to transferred annotation, sequence variation was also predicted from the assembly. This information can then be used with expression data from high through-put expression measures, such as microarrays, to more fully understand the underlying mechanisms of biological processes. Both kinds of data, expression and annotation, are housed together and available at www.anexdb.org.