The Genome Browser serves as the data repository for the ENCODE (Encyclopedia of DNA Elements) project (35). The set of human genome annotations available on the UCSC ENCODE portal (http://genome.ucsc.edu/ENCODE/) (36), contributed by members of the ENCODE Consortium, has increased by 40% in the past 12 months, from 130 tracks and 950 tables on 2 assemblies in September 2006 to 199 tracks and 1583 tables on 3 assemblies in September 2007. The ENCODE data sets are now available on the March 2006 (Build 36, hg18) as well as the May 2004 (Build 35, hg17) human assembly.
