About this Resource
PubMed provides access to bibliographic information, which is drawn primarily from MEDLINE, PreMEDLINE, HealthSTAR, as well as Publisher-Supplied citations. In addition, for electronically supplied journals that are indexed selectively for MEDLINE, and include articles unrelated to medicine or the life sciences, PubMed includes all articles from that journal, not just those that are included in MEDLINE. It is expected that access to additional NLM databases will be added in the future.
PubMed also provides access and links to the integrated molecular biology databases included in NCBI's Entrez retrieval system. These databases contain DNA and protein sequences, 3-D protein structure data, population study data sets, and assemblies of complete genomes in an integrated system.
PubMed provides access to bibliographic information that includes MEDLINE, OLDMEDLINE, as well as:
The out-of-scope citations (e.g., articles on plate tectonics or astrophysics) from certain MEDLINE journals, primarily general science and chemistry journals, for which the life sciences articles are indexed for MEDLINE.
Citations that precede the date that a journal was selected for MEDLINE indexing.
Some additional life science journals that submit full text to PubMedCentral and receive a qualitative review by NLM.
Years of Coverage: 1946 to present
Access is unrestricted.