The tool was developed in response to the perceived need that it is desirable to find MeSH terms directly from text such as an abstract or grant summary. MeSH on Demand has been developed in close collaboration among various NLM units (MeSH Section, NLM Index Section, and the Lister Hill National Center for Biomedical Communications) to address this need. Use MeSH on Demand to find MeSH terms relevant to your text up to 10,000 characters.
Go directly to it: http://ii.nlm.nih.gov/Interactive/MeSHonDemand.shtml
Read more about it: https://www.nlm.nih.gov/pubs/techbull/mj14/mj14_mesh_on_demand.html
Updated: March 5, 2020