The NLM Unified Medical Language System (UMLS) project develops and distributes multi-purpose, electronic "Knowledge Sources" and associated lexical tools for system developers. Researchers will find the UMLS products useful in investigating knowledge representation and retrieval questions.
Last reviewed: 29 July 2009 Last updated: 29 July 2009 First published: 15 July 2009 Metadata| Permanence level: Permanence Not Guaranteed