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New on STN

January 2020

Changes to Derwent WPI Update numbering and the total number of annual DWPI updates

December 2019

Derwent World Patents Index: Manual Code revision 2020

December 2019

New Korean Patent Full-Text Database KRFULL released

STN User Meetings

Munich, 20.05.2020

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New Version of Emtree Introduces Over 1,000 New Terms to Embase on Classic STN and New STN

18. May 2015

The May 2015 version of Emtree adds over 1,000 new preferred terms for Embase searching on classic STN platforms, as well as on new STN. The new terms include:

  • 172 drug terms (terms assigned to the Chemicals and Drugs facet)
  • 901 non-drug terms

In addition, 225 existing Emtree terms – 48 drug terms and 177 non- drug terms - have been replaced. Many of the new and replacement terms are organism names, especially bacteria and virus names.

In total Emtree now includes 71,802 preferred terms.

Further information on the latest changes to Emtree may be found at:
If you are running alerts in Embase, please consider reviewing the lists of new and replacement terms in case your strategies need to be updated.