PubMed comprises more than 21 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
PubMed is
a Web-based retrieval system developed by the National Center
for Biotechnology Information (NCBI) at the National Library of
Medicine. It is part of NCBI's vast retrieval system, known as
Entrez. PubMed is
a database of bibliographic information drawn primarily from the
life sciences literature. It contains
links to full-text articles at participating publishers' Web sites
as well as links to other third party sites such as libraries
and sequencing centers. It provides
access and links to the integrated molecular biology and chemistry databases
maintained by NCBI.
NLM has been indexing the biomedical literature since 1879, to
help provide health professionals access to information necessary for
research, health care, and education.
What was once a printed index to articles, the Index Medicus,
became a database now known as MEDLINE. MEDLINE contains journal
citations and abstracts for biomedical literature from around the
world. Since 1996, free access to MEDLINE has been available to the public online via PubMed.
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