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Available in 26 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-26" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">26 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A3%D9%86%D8%AA%D8%B1%D9%8A%D9%87" title="أنتريه – Arabic" lang="ar" hreflang="ar" data-title="أنتريه" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Entrez" title="Entrez – Asturian" lang="ast" hreflang="ast" data-title="Entrez" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Entrez" title="Entrez – Minnan" lang="nan" hreflang="nan" data-title="Entrez" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/Entrez" title="Entrez – Bulgarian" lang="bg" hreflang="bg" data-title="Entrez" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Entrez" title="Entrez – Bosnian" lang="bs" hreflang="bs" data-title="Entrez" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Entrez" title="Entrez – Catalan" lang="ca" hreflang="ca" data-title="Entrez" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Entrez_Gene" title="Entrez Gene – German" lang="de" hreflang="de" data-title="Entrez Gene" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Entrez" title="Entrez – Spanish" lang="es" hreflang="es" data-title="Entrez" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A2%D9%86%D8%AA%D8%B1%D9%87" title="آنتره – Persian" lang="fa" hreflang="fa" data-title="آنتره" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Entrez" title="Entrez – French" lang="fr" hreflang="fr" data-title="Entrez" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Entrez" title="Entrez – Galician" lang="gl" hreflang="gl" data-title="Entrez" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/Entrez" title="Entrez – Korean" lang="ko" hreflang="ko" data-title="Entrez" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Entrez" title="Entrez – Croatian" lang="hr" hreflang="hr" data-title="Entrez" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Entrez" title="Entrez – Italian" lang="it" hreflang="it" data-title="Entrez" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/Entrez" title="Entrez – Hebrew" lang="he" hreflang="he" data-title="Entrez" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Entrez" title="Entrez – Hungarian" lang="hu" hreflang="hu" data-title="Entrez" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%A7%D9%88%D9%86%D8%AA%D8%B1%D9%89" title="اونترى – Egyptian Arabic" lang="arz" hreflang="arz" data-title="اونترى" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Entrez" title="Entrez – Dutch" lang="nl" hreflang="nl" data-title="Entrez" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Entrez" title="Entrez – Polish" lang="pl" hreflang="pl" data-title="Entrez" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Entrez" title="Entrez – Portuguese" lang="pt" hreflang="pt" data-title="Entrez" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Entrez" title="Entrez – Romanian" lang="ro" hreflang="ro" data-title="Entrez" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Entrez" title="Entrez – Serbian" lang="sr" hreflang="sr" data-title="Entrez" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Entrez" title="Entrez – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Entrez" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/Entrez" title="Entrez – Ukrainian" lang="uk" hreflang="uk" data-title="Entrez" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Entrez" title="Entrez – Vietnamese" lang="vi" hreflang="vi" data-title="Entrez" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/Entrez" title="Entrez – Chinese" lang="zh" hreflang="zh" data-title="Entrez" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit 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title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Cross-database search engine for health sciences</div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Entrez.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Entrez.svg/120px-Entrez.svg.png" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Entrez.svg/180px-Entrez.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Entrez.svg/240px-Entrez.svg.png 2x" data-file-width="40" data-file-height="40" /></a><figcaption>The Entrez logo</figcaption></figure> <p>The <b>Entrez</b> (<style data-mw-deduplicate="TemplateStyles:r1177148991">.mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}</style><span class="IPA-label IPA-label-small">IPA:</span> <span class="IPA nowrap" lang="und-Latn-fonipa"><a href="/wiki/Help:IPA" title="Help:IPA">[ɒnˈtreɪ]</a></span>)<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Global Query Cross-Database Search System is a <a href="/wiki/Federated_search" title="Federated search">federated search</a> engine, or <a href="/wiki/Web_portal" title="Web portal">web portal</a> that allows users to search many discrete <a href="/wiki/Health_sciences" class="mw-redirect" title="Health sciences">health sciences</a> databases at the <a href="/wiki/National_Center_for_Biotechnology_Information" title="National Center for Biotechnology Information">National Center for Biotechnology Information</a> (NCBI) website.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The NCBI is a part of the <a href="/wiki/United_States_National_Library_of_Medicine" title="United States National Library of Medicine">National Library of Medicine</a> (NLM), which is itself a department of the <a href="/wiki/National_Institutes_of_Health" title="National Institutes of Health">National Institutes of Health</a> (NIH), which in turn is a part of the <a href="/wiki/United_States_Department_of_Health_and_Human_Services" title="United States Department of Health and Human Services">United States Department of Health and Human Services</a>. 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. </p><p>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 <a href="/wiki/Primary_structure" class="mw-redirect" title="Primary structure">sequences</a>, <a href="/wiki/Tertiary_structure" class="mw-redirect" title="Tertiary structure">structures</a>, and references. The Entrez system can provide views of <a href="/wiki/Gene" title="Gene">gene</a> and <a href="/wiki/Protein" title="Protein">protein</a> sequences and <a href="/wiki/Chromosome" title="Chromosome">chromosome</a> maps. Some textbooks are also available online through the Entrez system. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Features">Features</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Entrez&action=edit&section=1" title="Edit section: Features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Entrez front page provides, by default, access to the global query. All databases indexed by Entrez can be searched via a single query string, supporting <a href="/wiki/Boolean_algebra#Operations" title="Boolean algebra">Boolean operators</a> and search term tags to limit parts of the search statement to particular fields. This returns a unified results page, that shows the number of hits for the search in each of the databases, which are also linked to actual search results for that particular database. </p><p>Entrez also provides a similar interface for searching each particular database and for refining search results. The Limits feature allows the user to narrow a search, a web forms interface. The History feature gives a numbered list of recently performed queries. Results of previous queries can be referred to by number and combined via Boolean operators. Search results can be saved temporarily in a Clipboard. Users with a MyNCBI account can save queries indefinitely, and also choose to have updates with new search results e-mailed for saved queries of most databases. It is widely used in the field of biotechnology as a reference tool for students and professionals alike. </p> <div class="mw-heading mw-heading2"><h2 id="Databases">Databases</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Entrez&action=edit&section=2" title="Edit section: Databases"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Entrez searches the following databases: </p> <ul><li><a href="/wiki/PubMed" title="PubMed">PubMed</a>: biomedical literature citations and abstracts, including <a href="/wiki/Medline" class="mw-redirect" title="Medline">Medline</a>—articles from (mainly <a href="/wiki/Medical_journal" title="Medical journal">medical</a>) <a href="/wiki/Scientific_journal" title="Scientific journal">journals</a>, often including abstracts. Links to PubMed Central and other full-text resources are provided for articles from the 1990s.</li> <li><a href="/wiki/PubMed_Central" title="PubMed Central">PubMed Central</a>: free, full-text journal articles</li> <li>Site Search: NCBI web and FTP web sites</li> <li>Books: online books</li> <li><a href="/wiki/Online_Mendelian_Inheritance_in_Man" title="Online Mendelian Inheritance in Man">Online Mendelian Inheritance in Man</a> (OMIM)</li> <li><i>Nucleotide</i>: sequence database (<a href="/wiki/GenBank" title="GenBank">GenBank</a>)</li> <li><i>Protein</i>: sequence database (<a href="/w/index.php?title=GenPept&action=edit&redlink=1" class="new" title="GenPept (page does not exist)">GenPept</a>)</li> <li><i>Genome</i>: whole genome sequences and <a href="/wiki/Human_Genome_Project" title="Human Genome Project">mapping</a></li> <li><i>Structure</i>: three-dimensional macromolecular structures</li> <li><i>Taxonomy</i>: organisms in GenBank Taxonomy</li> <li><i><a href="/wiki/DbSNP" title="DbSNP">dbSNP</a></i>: single nucleotide polymorphism</li> <li><i><a href="/w/index.php?title=Gene_(database)&action=edit&redlink=1" class="new" title="Gene (database) (page does not exist)">Gene</a></i>:<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> gene-centered information</li> <li><i>HomoloGene</i>: eukaryotic homology groups</li> <li><a href="/wiki/PubChem" title="PubChem">PubChem</a> Compound: unique small molecule chemical structures</li> <li>PubChem Substance: deposited chemical substance records</li> <li><a href="/wiki/Genome_Project" class="mw-redirect" title="Genome Project">Genome Project</a>: genome project information</li> <li><a href="/wiki/UniGene" title="UniGene">UniGene</a>: gene-oriented clusters of transcript sequences</li> <li><i><a href="/wiki/Conserved_domain_database" class="mw-redirect" title="Conserved domain database">CDD</a></i>: conserved protein domain database</li> <li><i>PopSet</i>: population study data sets (<a href="/wiki/Epidemiology" title="Epidemiology">epidemiology</a>)</li> <li><i>GEO Profiles</i>: expression and molecular abundance profiles</li> <li><i>GEO DataSets</i>: experimental sets of GEO data</li> <li><i>Sequence read archive</i>: high-throughput sequencing data</li> <li><i>Cancer Chromosomes</i>: cytogenetic databases</li> <li><i>PubChem BioAssay</i>: bioactivity screens of chemical substances</li> <li><i>Probe</i>: sequence-specific reagents</li> <li><i>NLM Catalog</i>: NLM bibliographic data for over 1.2 million journals, books, audiovisuals, computer software, electronic resources, and other materials resident in LocatorPlus (updated every weekday).</li></ul> <div class="mw-heading mw-heading2"><h2 id="Access">Access</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Entrez&action=edit&section=3" title="Edit section: Access"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In addition to using the search engine forms to query the data in Entrez, <a href="/wiki/National_Center_for_Biotechnology_Information" title="National Center for Biotechnology Information">NCBI</a> provides the Entrez Programming Utilities<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> (eUtils) for more direct access to query results. The eUtils are accessed by posting specially formed URLs to the NCBI server, and parsing the XML response. There was also an eUtils <a href="/wiki/SOAP_(protocol)" class="mw-redirect" title="SOAP (protocol)">SOAP</a> interface which was terminated in July 2015.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Entrez&action=edit&section=4" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1991, Entrez was introduced in CD form. In 1993, a client-server version of the software provided connectivity with the internet. In 1994, NCBI established a website, and Entrez was a part of this initial release. In 2001, Entrez bookshelf was released and in 2003, the Entrez Gene database was developed.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Entrez&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.collinsdictionary.com/dictionary/english/entrez/">"Definition of 'entrez'<span class="cs1-kern-right"></span>"</a>. <i>Collins Dictionary [Internet]</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Collins+Dictionary+%5BInternet%5D.&rft.atitle=Definition+of+%27entrez%27&rft_id=https%3A%2F%2Fwww.collinsdictionary.com%2Fdictionary%2Fenglish%2Fentrez%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEntrez" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNCBI_Resource_Coordinators2012" class="citation journal cs1">NCBI Resource Coordinators (2012). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3531099">"Database resources of the National Center for Biotechnology Information"</a>. <i>Nucleic Acids Research</i>. <b>41</b> (Database issue): D8–D20. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fnar%2Fgks1189">10.1093/nar/gks1189</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3531099">3531099</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/23193264">23193264</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nucleic+Acids+Research&rft.atitle=Database+resources+of+the+National+Center+for+Biotechnology+Information&rft.volume=41&rft.issue=Database+issue&rft.pages=D8-D20&rft.date=2012&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC3531099%23id-name%3DPMC&rft_id=info%3Apmid%2F23193264&rft_id=info%3Adoi%2F10.1093%2Fnar%2Fgks1189&rft.au=NCBI+Resource+Coordinators&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC3531099&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEntrez" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/gene/">"Home - Gene - NCBI"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Home+-+Gene+-+NCBI&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fgene%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEntrez" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/entrez/query/static/eutils_help.html"><i>Entrez Utilities</i></a>. National Center for Biotechnology Information (US). 2010.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Entrez+Utilities&rft.pub=National+Center+for+Biotechnology+Information+%28US%29&rft.date=2010&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery%2Fstatic%2Feutils_help.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEntrez" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/books/NBK43082/"><i>The E-utility Web Service (SOAP)</i></a>. National Center for Biotechnology Information (US). 23 January 2015.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+E-utility+Web+Service+%28SOAP%29&rft.pub=National+Center+for+Biotechnology+Information+%28US%29&rft.date=2015-01-23&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fbooks%2FNBK43082%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEntrez" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSmith" class="citation web cs1">Smith, Kent. <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/books/NBK148949/">"A Brief History of NCBI's Formation and Growth"</a>. <i>The NCBI Handbook [Internet]. 2nd edition</i><span class="reference-accessdate">. Retrieved <span class="nowrap">3 May</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+NCBI+Handbook+%5BInternet%5D.+2nd+edition.&rft.atitle=A+Brief+History+of+NCBI%27s+Formation+and+Growth&rft.aulast=Smith&rft.aufirst=Kent&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fbooks%2FNBK148949%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEntrez" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Entrez&action=edit&section=6" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/sites/gquery">Entrez search engine form</a></li> <li><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/books/NBK3836/">Entrez Help</a></li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Entrez&oldid=1249687015">https://en.wikipedia.org/w/index.php?title=Entrez&oldid=1249687015</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Internet_properties_established_in_1993" title="Category:Internet properties established in 1993">Internet properties established in 1993</a></li><li><a href="/wiki/Category:1991_establishments_in_the_United_States" title="Category:1991 establishments in the United States">1991 establishments in the United States</a></li><li><a href="/wiki/Category:Online_databases" title="Category:Online databases">Online databases</a></li><li><a href="/wiki/Category:National_Institutes_of_Health" title="Category:National Institutes of Health">National Institutes of Health</a></li><li><a href="/wiki/Category:Biological_databases" title="Category:Biological databases">Biological databases</a></li><li><a href="/wiki/Category:Government-owned_websites_of_the_United_States" title="Category:Government-owned websites of the United States">Government-owned websites of the United States</a></li><li><a href="/wiki/Category:Scholarly_search_services" title="Category:Scholarly search services">Scholarly search services</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:Pages_with_undetermined_IPA" title="Category:Pages with undetermined IPA">Pages with undetermined IPA</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 6 October 2024, at 08:39<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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