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Nancy Ondal ZieglerThe World's Largest Medical Library
Medical Subject Headings
MeSH Browser
Online searching of MeSH vocabulary
About the MeSH Browser
Suggestions for authors' keywords
All About MeSH
MeSH Fact Sheet
Publications and presentations by MeSH staff
Introduction to MeSH
Information from Previous Years
MeSH 50th Anniversary
Obtaining MeSH
Download electronic copies.
Lists of Annual Changes to MeSH.
Citation Maintenance
About Updates
Download XML Files
MeSH Vocabulary Suggestions
MeSH vocabulary suggestions
What's New
2013 MeSH Files Available
Related Efforts
Unified Medical Language System (UMLS®)
NLM Classification
RxNorm
DailyMed
MeSH
Staff
Biographies and email
Publications and presentations -
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Andover OrthopaedicsMedical Subject Headings = MeSH
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Tracy VarnerMeSH is the National Library of Medicine's controlled vocabulary thesaurus. It consists of sets of terms naming descriptors in a hierarchical structure that permits searching at various levels of specificity.
MeSH descriptors are arranged in both an alphabetic and a hierarchical structure. At the most general level of the hierarchical structure are very broad headings such as "Anatomy" or "Mental Disorders." More specific headings are found at more narrow levels of the eleven-level hierarchy, such as "Ankle" and "Conduct Disorder." There are 25,588 descriptors in 2010 MeSH. There are also over 172,000 entry terms that assist in finding the most appropriate MeSH Heading, for example, "Vitamin C" is an entry term to "Ascorbic Acid." In addition to these headings, there are more than 190,000 headings called Supplementary Concept Records (formerly Supplementary Chemical Records) within a separate thesaurus. -
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ascodocpsy ascodocpsyThe Medical Subject Headings comprise NLM's controlled vocabularyused for indexing articles, for cataloging books and other holdings, and for searching MeSH-indexed databases, including MEDLINE.
MeSH terminology provides a consistent way to retrieve information that may use different terminology for the same concepts. MeSH organizes its descriptors in a hierarchical structure so that broad searches will find articles indexed more narrowly. This structure also provides an effective way for searchers to browse MeSH in order to find appropriate descriptors. -
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