Databases: National Library of Medicine
PubMed, a service of the National Library of Medicine, includes over 14 million citations for biomedical articles back to the 1950's. These citations are from MEDLINE and additional life science over 4 000 journals. PubMed includes links to many sites providing full text articles and other related resources. MeSH is National Library of Medicine's controlled vocabulary (thesaurus) used for indexing articles for MEDLINE/PubMed. MeSH terminology provides a consistent way to retrieve information that may use different terminology for the same concepts.