Concepts Issues and Standards. Current Status of the NLMs Umls Project: Drug and Chemical Entries in Meta-1

摘要

Thirty-two percent of the concepts in the National Library of Medicine's UMLS Metathesaurus, Meta-1 [10], are the names of biomedically important chemicals. This paper describes the origin of the chemical terms included in Meta-1, the structure and information content of these records, and the potential uses of these concepts to access chemical information in biomedical databases. Data is also presented quantitatively describing the subjects of the articles in the biomedical literature and the frequency with which articles include chemical subjects.