MeSH, an acronym for Medical Subject Headings, is the controlled vocabulary system applied to all articles in MEDLINE. MeSH is:
MeSH vocabulary is used in both NLM and Ovid platforms.
MeSH Headings, Subheadings, and Publication Types are organized in MeSH trees with the broadest headings at the top. For example under the heading Migraine, is the subheading "Chemically induced" and "Systematic Reviews" can be winnowed at the base of the MeSH tree.
Professional indexers assign MeSH vocabulary to MEDLINE records.
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Medical Subject Headings (MeSH), is the controlled vocabulary system applied to all articles in MEDLINE.
Resource for learning more about MeSH: