en.wikipedia.org/wiki/Entrez

The Entrez Global Query Cross-Database Search System is a federated search engine, or web portal that allows users to search many discrete health sciences ...

www.ncbi.nlm.nih.gov/search

Search all biomedical databases provided by the National Center for Biotechnology Information (NCBI), an agency of the U.S. National Library of Medicine at the ...

www.ncbi.nlm.nih.gov/Web/Search/entrezfs.html

Entrez is an integrated database system by the National Center for Biotechnology Information.

www.ncbi.nlm.nih.gov/Class/MLACourse/Original8Hour/Entrez

Some fields are common to all Entrez databases, such as accession number (or in PubMed, UID), author name, text word, journal name, publication date, ...

www.ncbi.nlm.nih.gov/gene

A portal to gene-specific content based on NCBI's RefSeq project, information from model organism databases, and links to other resources.<br />

www.mobot.org/jwcross/duckweed/duckweed-PubMed-query.htm

Items 1 - 20 of 40 ... PubMed is the National Library of Medicine's search service that provides access to over 11 million citations in MEDLINE, PreMEDLINE, and ...

academic.oup.com/nar/article/35/suppl_1/D26/1118044

Abstract. Entrez Gene () is NCBI's database for gene-specific information. Entrez Gene includes records from genomes that have been completely sequenced, ...

cran.r-project.org/web/packages/rentrez/vignettes/rentrez_tutorial.html

The NCBI makes this data available through a web interface, an FTP server and through a REST API called the Entrez Utilities ( Eutils for short). This package ...

vlab.amrita.edu/?sub=3&brch=273&sim=1437&cnt=1

Entrez is an integrated information search and retrieval system for biological databases from NCBI.