United States National Library of Medicine National Institutes of Health

2009AA MeSH Source Information

Counts

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Semantic Type Count Percentage
ORGANIC CHEMICAL 124754 42.2
AMINO ACID, PEPTIDE, OR PROTEIN 98052 33.1
PHARMACOLOGIC SUBSTANCE 74946 25.3
BIOLOGICALLY ACTIVE SUBSTANCE 50981 17.2
ENZYME 23002 7.8
CARBOHYDRATE 9622 3.3
STEROID 8409 2.8
NUCLEIC ACID, NUCLEOSIDE, OR NUCLEOTIDE 7309 2.5
INDICATOR, REAGENT, OR DIAGNOSTIC AID 6879 2.3
LIPID 5537 1.9
IMMUNOLOGIC FACTOR 5304 1.8
DISEASE OR SYNDROME 4573 1.5
HAZARDOUS OR POISONOUS SUBSTANCE 4461 1.5
RECEPTOR 4270 1.4
INORGANIC CHEMICAL 3740 1.3
ANTIBIOTIC 3167 1.1
THERAPEUTIC OR PREVENTIVE PROCEDURE 2892 1

Notes

  • Semantic Types are a set of 135 broad subject areas that provide a consistent categorization of concepts represented in the Metathesaurus. Semantic Types are arranged into two mutually exclusive hierarchies, Entity and Event.
  • Semantic Types help summarize the content of a source.
  • Each Metathesaurus concept is assigned at least one semantic type, many have more than one.
  • The report displays the most frequently assigned semantic types in descending order, up to a total of 1%.
  • The 'Count' field below is the number of concepts assigned a specific semantic type and containing at least one atom from the source.
  • The 'Percentage' field below is the count relative to the total number of concepts that contain an atom from that source.
  • The MRSTY file contains one row for each Semantic Type assigned to each concept. All Metathesaurus concepts have at least one entry in this file.
  • See UMLS Documentation, Section 3, Semantic Network

Last reviewed: 27 April 2009
Last updated: 27 April 2009
First published: 27 April 2009
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