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The NCBI is a part of the National Library of Medicine (NLM), which is itself a department of the National Institutes of Health (NIH), which in turn is a part of the United States Department of Health and Human Services. The name "Entrez" (a greeting meaning "Come in" in French) was chosen to reflect the spirit of welcoming the public to search ...
The National Library of Medicine (NLM) classification system is a library indexing system covering the fields of medicine and preclinical basic sciences. The NLM classification is patterned after the Library of Congress (LC) Classification system : alphabetical letters denote broad subject categories which are subdivided by numbers. [ 1 ]
The National Library of Medicine has long provided programs and services for professional medical scientists and health care providers, including MEDLINE and the various services that access it, such as PubMed and Entrez. By the 1990s, more members of the general public were using these services as Internet access became widespread. [5]
The United States National Library of Medicine (NLM), operated by the United States federal government, is the world's largest medical library. [ 5 ] Located in Bethesda, Maryland , the NLM is an institute within the National Institutes of Health .
A given descriptor may appear at several locations in the hierarchical tree. The tree locations carry systematic labels known as tree numbers, and consequently one descriptor can carry several tree numbers. For example, the descriptor "Digestive System Neoplasms" has the tree numbers C06.301 and C04.588.274; C stands for Diseases, C06 for ...
PubMed is a free database including 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.
The NLM maintains numerous medical and genomic databases, searchable via its Entrez search system, including MEDLINE and OMIM (a genetic traits database). The largest medical library in Europe is the German National Library of Medicine (ZB MED), which also has collections in the fields of nutrition, agriculture, and environmental science. ZB ...
The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. . Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is availa