GENSAT (43–45) is a gene expression atlas of the mouse central nervous system produced with data supplied by the Rockefeller University and the St Jude Children's; Research Hospital. GENSAT (www.ncbi.nlm.nih.gov/projects/gensat/) catalogs images of histological sections of the mouse brain in which biochemical tags have been used to visualize local gene expression. In addition to search tools, GENSAT provides download, zoom and comparison facilities for the >90 000 images in the collection.
