1999 MeSH on the Web

The 1999 MeSH files are available for download from the MeSH Web site at http://www.nlm.nih.gov/mesh/.

Restrictions on Use of MeSH Data

There is no charge for downloading any of the MeSH data available from the NLM Web site. However, use of MeSH file data is subject to conditions which are detailed in the Memorandum of Understanding that must be completed before downloading data.

Available MeSH Files
The following formatted versions of the entire 1999 MeSH vocabulary are currently available:

1999 MeSH Trees in ASCII Format (http://www.nlm.nih.gov/mesh/filelist.html): MeSH descriptors with the tree numbers that place the heading in a hierarchical arrangement. Sorted by tree number.

MeSH in MARC Format (http://www.nlm.nih.gov/mesh/filelist.html): MeSH vocabulary in the USMARC authority format include MeSH descriptors, qualifiers (subheadings), and descriptor-qualifier combination records. Supplementary Chemical Records are not included. For best results, please use a graphical interface.

1999 MeSH in ASCII Format (http://www.nlm.nih.gov/mesh/filelist.html): MeSH descriptors, qualifiers (subheadings), and Supplementary Chemical Records (through July 24, 1998), in ASCII format. This is a tagged format, similar to the ELHILL Unit Record format. However, the data are encoded in ASCII, not EBCDIC. This format also includes Supplementary Chemical Records, with those data through July 24. See Figure 1 for a sample ASCII record.

Figure 1 - Sample ASCII MeSH Format Record:

1999 MeSH on the Web. NLM Tech Bull. 1998 Sep-Oct;(304):e8.