Emtree is Embase's subject heading system. It contains over 60,000 preferred terms - including PubMed's MeSH -  and maps over 270,000 synonyms (including 175,000+ drug synonyms) to the recommended subject heading using natural language terminology. Embase automatically suggests Emtree terminology based on your keyword search. Build a targeted search using the Emtree tool below, or for more information see whitepaper.