Database resources of the National Center for Biotechnology Information

In addition to maintaining the GenBank(R) nucleic acid sequence database, t he National Center for Biotechnology Information (NCBI) provides data analy sis and retrieval resources that operate on the data in GenBank and a varie ty of other biological data made through NCBI's Web site. NCBI data retriev al resources include Entrez, PubMed, LocusLink and the Taxonomy Browser. Da ta analysis resources include BLAST, Electronic PCR, OrfFinder, RefSeq, Uni Gene, HomolGene, Database of Single Nucleotide Polymorphisms (dbSNP), Human Genome Sequencing, Human MapViewer, GeneMap'99, Human-Mouse Homology Map, Cancer Chromosome Aberration Project (CCAP), Entrez Genomes, Clusters of Or tholgous Groups (COGs) database, Retroviral Genotyping Tools, Cancer Genome Anatomy Project (CGAP), SAGEmap, Gene Expression Omnibus (GEO), Online Men delian Inheritance in Man (OMIM), the Molecular Modeling Database (MMDB) an d the Conserved Domain Database (CDD). Augmenting many of the Web applicati ons are custom implementations of the BLAST program optimized to search spe cialized data sets. All of the resources can be accessed through the NCBI h ome page at: http:/www.ncbi.nlm.nih.gov.