Medical Subject Headings
MeSH XML and ASCII Files Available for Download
A variety of formatted versions of the entire MeSH vocabulary are available to download from our download page provided you are in aggreement with our Memorandum of Understanding.
For downloading the large files, we recommend that you save the file to your local hard drive rather than open it here. To do this, you must right-click the link and then select either Save Link... or Save Target..., depending on your browser. The XML and ASCII formatted versions of the entire MeSH vocabulary are listed below. To download MeSH/MARC files Click here.
2018 MeSH Files
These files are listed under ftp://nlmpubs.nlm.nih.gov/online/mesh/MESH_FILES/
|Record Type||Full File||Size||ZIP file||Size||GZ file||Size|
|Descriptors||desc2018.xml||286 MB||desc2018.zip||15 MB||desc2018.gz||15 MB|
|Supplementary Records||supp2018.xml||577 MB||supp2018.zip||44 MB||supp2018.gz||44 MB|
|Record Type||Full File||Size|
|Descriptor Records||d2018.bin||28 MB|
|Supplemental Records||c2018.bin||95 MB|
|Qualifier Records||q2018.bin||84 KB|
|MeSH trees||mtrees2018.bin||2.3 MB|
2017 MeSH Files
These files are now listed under ftp://nlmpubs.nlm.nih.gov/online/mesh/2017/
Full MeSH Data FTP Archive - Years 1999-Present
MeSH data can now be accessed directly from our MeSH FTP Archive. The folders are organized according to year starting with the years 1999 - 2010 in one folder and a separate folder for every year afterwards. Note that the format of the each of the data file names in the FTP site follows the same pattern shown in the tables shown above. For example the 2016 Descriptor XML data file is named "desc2016.xml".
For questions concerning the content of MeSH files, downloading from FTP, or to provide feedback:
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