Tags: Biological Database, Database.
PubMed is a free search engine accessing primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine (NLM) at the National Institutes of Health maintains the database as part of the Entrez system of information retrieval.From 1971 to 1997 MEDLINE online access to the MEDLARS computerized database had been primarily through institutional facilities like medical libraries.
