The Consensus CoDing Sequence (CCDS) Database "project is a collaborative effort to identify a core set of human protein-coding regions that are consistently annotated and of high quality. The long-term goal is to support convergence toward a standard set of gene annotations on the human genome." CCDS project collaborators include the National Center for Biotechnology (NCBI), European Bioinformatics Institute (EBI), Wellcome Trust Sanger Institute (WTSI), and University of California, Santa Cruz (UCSC). The CCDS site links to four Genome Displays from the collaborating institutions including Ensembl Genome Browser, UCSC Genome Browser, NCBI Map Viewer, and Vega Genome Browser. The site offers Human CCDS Statistics, and a search engine that allows users to search by Nucleotide ID, Gene ID, Protein ID, and CCDS ID.