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PubMed

PubMed is an openly accessible, free database which primarily includes the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine (NLM) at the National Institutes of Health maintains the database as part of the Entrez system of information retrieval.

Characters, Art, Measurement & Science

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Research this topic

Explore the main themes, entities and connections around PubMed. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Release date
January 1996; 30 years ago (1996-01)
Research center
United States National Library of Medicine (NLM)

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Content

Characteristics

Alternative interfaces

Data mining of PubMed

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

PubMed

Nodes52
Edges51
Triples115
Avg. degree1.96
Density0.038462
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

PubMed

Top relations

related to Alternative interfaces · 14
PubMed → As, Dialog, EBSCO, Embase, Knowledge Finder, Lu, Medicine, MEDLINE, NLM, October, Ovid, The National Library, United States, Web-based PubMed
related to Website design · 14
PubMed → Best Match, By, First Author, Google-like, January, Journal, Last Author, May, Most Recent, October, Publication Date, The PubMed, There, Title
related to Content · 12
PubMed → Annals, BMJ, Bookshelf, In, Index Medicus, Medical Subject Headings, MEDLINE, MEDLINEa, MeSH, NLM, Science, Surgeryvery
related to LinkOut · 12
PubMed → Aalborg University, Denmark, Link, LinkOut, March, NLM, Outside Tool, Seattle, Some, Summer, Users, ZymoGenetics
related to Data mining of PubMed · 10
PubMed → Alternative, Code, December, For, FTP, In, Matlab, Python, The, XML
related to Mapping to MeSH · 9
PubMed → Auto Term Mapping, Cancer, Examples, MeSH, Nursing, Subheading, Terms, This, Where
see also · 8
PubMed → CentralPubMed Central CanadaGrateful Med, Europe PubMed CentralJournalReview, Find, If, MeSH, NCBI Entrez, The, To
related to PubMed identifier · 5
PubMed → PMCID, PMID, PMIDs, PubMed Central, The
related to PubMed Commons · 4
PubMed → In, In February, PubMed Commons, This
related to askMEDLINE · 3
PubMed → As, It, MEDLINE/PubMed

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

search medline free database mesh nlm articles using data ncbi use access journal also journals available citation terms pmid clinical

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
PubMedRelease dateJanuary 1996; 30 years ago (1996-01)1.00infobox
PubMedResearch centerUnited States National Library of Medicine (NLM)1.00infobox
PubMedWebsitepubmed.ncbi.nlm.nih.gov1.00infobox
PubMedis aopenly accessible0.90text
Embaseinstance ofAlternative interfacesThe National Library of Medicine leases the MEDLINE information to a number of private vendors0.80text
Ovidinstance ofAlternative interfacesThe National Library of Medicine leases the MEDLINE information to a number of private vendors0.80text
Dialoginstance ofAlternative interfacesThe National Library of Medicine leases the MEDLINE information to a number of private vendors0.80text
EBSCOinstance ofAlternative interfacesThe National Library of Medicine leases the MEDLINE information to a number of private vendors0.80text
Knowledge Finderinstance ofAlternative interfacesThe National Library of Medicine leases the MEDLINE information to a number of private vendors0.80text
many other commercialinstance ofAlternative interfacesThe National Library of Medicine leases the MEDLINE information to a number of private vendors0.80text
non-commercialinstance ofAlternative interfacesThe National Library of Medicine leases the MEDLINE information to a number of private vendors0.80text
and academic providersinstance ofAlternative interfacesThe National Library of Medicine leases the MEDLINE information to a number of private vendors0.80text

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.