The UCSC Genome Browser is an online tool that provides access to genomic sequence and annotations for a wide variety of organisms. As of September 2012, it supports 63 organisms, including 26 mammals, 13 non-mammal vertebrates, 3 invertebrate deuterostomes, 13 insects, 6 worms, yeast, and sea hares. In the past year, 19 new genome assemblies were added, with 28 more expected in early 2013. Many annotation tracks were updated or remapped to the latest human reference genome. The UCSC Genes track for human and mouse assemblies was updated. Several features were introduced to improve usability, including new navigation menus. New genome assemblies include 4 model organisms, 7 newly sequenced organisms, and 8 updated assemblies for previously published organisms. The UCSC Genome Browser also includes new and updated annotations, such as the UCSC Genes track, dbSNP version 135, and several other tracks. The browser now supports the Variant Call Format (VCF) and includes a Publications track that shows DNA and protein sequences, SNPs, cytogenetic bands, and gene symbols text-mined from biomedical articles. The UCSC Genome Browser has also introduced four public track hubs for hg19 from external data providers. These hubs include the ENCODE Analysis hub, the UMassMed ZHub, the Expression & PolyA Database (xPAD) hub, and the miRcode hub. The browser has also improved its interface, including a menu bar, font and background changes, and a combined annotation search and gene suggest box. The UCSC Genome Browser plans to add or update several annotation tracks in the upcoming year, including a coverage/mapability track based on 1000 Genomes project data, an updated recombination rate and UCSC Genes track for the human genome, an updated ORFeome track for zebrafish, a mouse strain variant track, segmental duplication tracks for several assemblies, and more selected personal genomes in the human Personal Genome Variants track. The browser also plans to incorporate selected datasets from the ENCODE project. The UCSC Genome Browser will continue to add new and updated genome assemblies for vertebrate and other selected model organisms as they become available. Only assemblies registered and deposited in NCBI's GenBank will be considered for hosting at UCSC. The browser also plans to develop support for assembly data hubs to enable the genomics community to easily extend the Genome Browser to display genome assemblies that are not deposited at NCBI. The browser also plans to implement a supported mirror in Germany to improve access speed for European users.The UCSC Genome Browser is an online tool that provides access to genomic sequence and annotations for a wide variety of organisms. As of September 2012, it supports 63 organisms, including 26 mammals, 13 non-mammal vertebrates, 3 invertebrate deuterostomes, 13 insects, 6 worms, yeast, and sea hares. In the past year, 19 new genome assemblies were added, with 28 more expected in early 2013. Many annotation tracks were updated or remapped to the latest human reference genome. The UCSC Genes track for human and mouse assemblies was updated. Several features were introduced to improve usability, including new navigation menus. New genome assemblies include 4 model organisms, 7 newly sequenced organisms, and 8 updated assemblies for previously published organisms. The UCSC Genome Browser also includes new and updated annotations, such as the UCSC Genes track, dbSNP version 135, and several other tracks. The browser now supports the Variant Call Format (VCF) and includes a Publications track that shows DNA and protein sequences, SNPs, cytogenetic bands, and gene symbols text-mined from biomedical articles. The UCSC Genome Browser has also introduced four public track hubs for hg19 from external data providers. These hubs include the ENCODE Analysis hub, the UMassMed ZHub, the Expression & PolyA Database (xPAD) hub, and the miRcode hub. The browser has also improved its interface, including a menu bar, font and background changes, and a combined annotation search and gene suggest box. The UCSC Genome Browser plans to add or update several annotation tracks in the upcoming year, including a coverage/mapability track based on 1000 Genomes project data, an updated recombination rate and UCSC Genes track for the human genome, an updated ORFeome track for zebrafish, a mouse strain variant track, segmental duplication tracks for several assemblies, and more selected personal genomes in the human Personal Genome Variants track. The browser also plans to incorporate selected datasets from the ENCODE project. The UCSC Genome Browser will continue to add new and updated genome assemblies for vertebrate and other selected model organisms as they become available. Only assemblies registered and deposited in NCBI's GenBank will be considered for hosting at UCSC. The browser also plans to develop support for assembly data hubs to enable the genomics community to easily extend the Genome Browser to display genome assemblies that are not deposited at NCBI. The browser also plans to implement a supported mirror in Germany to improve access speed for European users.