entrez

is an Aggregator.

Entrez is NCBI's primary text search and retrieval system that integrates multiple biological databases including PubMed, GenBank, Gene, Protein, and many others. It provides a unified query interface and retrieval mechanism across NCBI's vast collection of biomedical and genomic data resources, enabling researchers to search and access information from disparate databases using a single query system.

Domains

biomedical, literature

License

Warning: No license entered

Homepage

entrez

Repository

Unknown

Infores ID

infores:entrez

FAIRsharing ID

Unknown

Product Summary

Products

From this Resource
ID Name URL Category Format Description
entrez.eutils Entrez E-utilities NBK25501 ProgrammingInterface http E-utilities API for programmatic acce...
entrez.web Entrez Web Interface gquery GraphicalInterface http Web-based search interface for Entrez...
entrez.edirect Entrez Direct (EDirect) NBK179288 ProgrammingInterface mixed Entrez Direct command-line tools for ...

Details

Entrez

Overview

Entrez is NCBI’s primary text search and retrieval system that integrates multiple biological databases including PubMed, GenBank, Gene, Protein, and many others. It provides a unified query interface and retrieval mechanism across NCBI’s vast collection of biomedical and genomic data resources.

Key Features

  • Unified Search: Single query interface across 40+ NCBI databases
  • Cross-Database Links: Integrated links between related records in different databases
  • Programmatic Access: E-utilities API and Entrez Direct command-line tools
  • Advanced Queries: Boolean operators, field-specific searches, and query history
  • Comprehensive Coverage: Access to literature, sequences, structures, genomes, and more

Integrated Databases

Entrez provides access to numerous NCBI databases including:

  • Literature: PubMed, PMC, Books
  • Genomics: GenBank, Gene, Genome, Assembly
  • Proteins: Protein, Structure
  • Clinical: ClinVar, GTR, MedGen
  • Taxonomy: Taxonomy
  • And many more specialized databases

Products

E-utilities API

The Entrez Programming Utilities (E-utilities) provide programmatic access to NCBI databases through a set of server-side programs that accept fixed URL syntax for retrieving data.

Entrez Direct (EDirect)

Command-line tools that provide access to NCBI’s suite of interconnected databases from a Unix terminal window.

Web Interface

The web-based Entrez Global Query Cross-Database Search System allows interactive searching across all Entrez databases.

Information Resource ID

This resource has the Information Resource identifier: infores:entrez

Domains

  • Genomics
  • Biomedical
  • Literature
  • Biological Systems

Taxon Coverage

All organisms (NCBITaxon:1 - root of NCBI Taxonomy)

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Created: November 05, 2025 | Last modified: November 05, 2025