PubMed indexes 24 million citations for biomedical literature from MEDLINE, life science journals, and online books. PubMed citations and abstracts include the fields of medicine, nursing, dentistry, veterinary medicine, the health care system, and preclinical sciences.
PubMed is a free resource that is developed and maintained by the National Center for Biotechnology Information (NCBI), at the U.S. National Library of Medicine (NLM), located at the National Institutes of Health (NIH).
PubMed indexes articles using controlled vocabulary, Medical Subject Headings (MeSH). The search engine uses automatic term mapping to map your search terms to the appropriate MeSH terms. You can see the MeSH terms for an article in Abstract view. To start searching, just enter your search terms in the basic search box. You can check how your search was mapped in the "Details" box on the right side of the search result lists. Advanced search and MeSH search options are also available. See tutorials in left sidebar on this page.
From a search results list, you can change the number of results on each page, send your results to EndNote, or email them. You can also use the search filters on the top right to see a subset of the results.