Screenshot of the representation of the profile of the pig A2M gene within the BioGPS online portal. All data used for this study are available through the BioGPS database. Genes can be searched for and where found the full expression profile is displayed as a bar chart. Samples are colored according to type, for example, CNS, GI tract, and so on, and the interface supports a number of useful features including a zoom function on the profile viewer, searches for genes with a similar profile, access to the raw data, links to external resources and the potential to compare profiles across species, for example, human, mouse, rat, zebrafish, frog. CNS, central nervous system; GI, gastrointestinal.