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Bibliographic Services Division (BSD)

MEDLARS® Management Section (MMS)

The primary focus of MMS is database development, management, testing and quality assurance, and training and user support to foster expanded access to health information for health professionals and the general public.

MMS staff collaborate with National Center for Biotechnology Information (NCBI), Office of Computing and Communications Systems (OCCS) and Lister Hill National Center for Biomedical Communications (LHNCBC) and staff in other areas of NLM's Library Operations Division to develop, test and support MEDLINE, PubMed® ,the Unified Medical Language System (UMLS), and the Value Set Authority Center (VSAC), and provide customer service, training and user documentation for these and other NLM systems.

MMS staff are responsible for the following:



Licensing/Data Distribution

  • Download Data from the National Library of Medicine
    Download MEDLINE/PubMed journal citations; bibliographic records from the NLM catalog; toxicological, chemical or directory data.

  • Unified Medical Language System® (UMLS®)
    Information about and access to the UMLS resources, including the Metathesaurus®, the Semantic Network, SPECIALIST Lexicon and lexical tools and MetamorphoSys, and links to UMLS Terminology Services (UTS) including Metathesaurus and SNOMED CT® Browsers.


Database Support & Documentation