readme.txt This data was taken from the current version of 2019 MeSH. Files are updated as necessary, generally only for Supplementary Concept Records. See documentation for for complete description of versioning and distribution of data. 2021 MeSH N-triple data mesh2021.nt - Combined, sorted, unique N-triple data. mesh2021.nt.sha1 - SHA-1 checksum of above file mesh2021.nt.gz - gzipped version mesh2021.nt.gz.sha1 - SHA-1 checksum of above file MeSH RDF VOID file void_1.0.0.ttl MeSH RDF Schema file vocabulary_1.0.0.ttl