title: Searching NCBI Databases Using Entrez.
abstract: One of the most widely used interfaces for the retrieval of information from biological databases is the NCBI Entrez system. Entrez capitalizes on the fact that there are pre-existing, logical relationships between the individual entries found in numerous public databases. The existence of such natural connections, mostly biological in nature, argued for the development of a method through which all the information about a particular biological entity could be found without having to sequentially visit and query disparate databases. Two basic protocols describe simple, text-based searches, illustrating the types of information that can be retrieved through the Entrez system. An alternate protocol builds upon the first basic protocol, using additional, built-in features of the Entrez system, and providing alternative ways to issue the initial query. The support protocol reviews how to save frequently issued queries. Finally, Cn3D, a structure visualization tool, is also discussed.
authors: Gretchen
authors: G
authors: Gibney
authors: Andreas D
authors: AD
authors: Baxevanis
mesh_terms: D000818:Animals; D003628:Database Management Systems; D016208:Databases, Factual; D006801:Humans; D016247:Information Storage and Retrieval / Q000379:methods*; D020407:Internet; D008968:Molecular Conformation; D009317:National Library of Medicine (U.S.); D039781:PubMed; D014481:United States; D014584:User-Computer Interface