Editing Entrez (section)

{{Short description|Cross-database search engine for health sciences}}
[[File:Entrez.svg|thumb|120px|The Entrez logo]]
The '''Entrez''' ({{IPAc-en|ɒ|n|ˈ|t|r|eɪ}})<ref>{{cite web|url=https://www.collinsdictionary.com/dictionary/english/entrez/|title=Definition of 'entrez'|website= Collins Dictionary [Internet].}}</ref> Global Query Cross-Database Search System is a [[federated search]] engine, or [[web portal]] that allows users to search many discrete [[health sciences]] databases at the [[National Center for Biotechnology Information]] (NCBI) website.<ref>{{Cite journal 
| last1 = NCBI Resource Coordinators | title = Database resources of the National Center for Biotechnology Information 
| doi = 10.1093/nar/gks1189 
| journal = Nucleic Acids Research 
| volume = 41 
| issue = Database issue 
| pages = D8–D20 
| year = 2012 
| pmid = 23193264 
| pmc =3531099 
}}</ref> The NCBI is a part of the [[United States National Library of Medicine|National Library of Medicine]] (NLM), which is itself a department of the [[National Institutes of Health]] (NIH), which in turn is a part of the [[United States Department of Health and Human Services]]. The name "Entrez" (a greeting meaning "Come in" in French) was chosen to reflect the spirit of welcoming the public to search the content available from the NLM.

Entrez Global Query is an integrated search and retrieval system that provides access to all databases simultaneously with a single query string and user interface. Entrez can efficiently retrieve related [[primary structure|sequences]], [[tertiary structure|structures]], and references. The Entrez system can provide views of [[gene]] and [[protein]] sequences and [[chromosome]] maps. Some textbooks are also available online through the Entrez system.