ASCII MeSH Descriptor Data Elements
Descriptor records in ASCII MeSH contain the data elements listed below. The list includes all the descriptor data in ELHILL file MeSH, plus some additional information.* Note that not every record has every data element. Sample record.
| AN | ANNOTATION |
| AQ | ALLOWABLE TOPICAL QUALIFIERS |
| CATSH | CATALOGING SUBHEADINGS LIST NAME * |
| CX | CONSIDER ALSO XREF |
| DA | DATE OF ENTRY |
| DC | DESCRIPTOR CLASS |
| DE | DESCRIPTOR ENTRY VERSION |
| DS | DESCRIPTOR SORT VERSION |
| DX | DATE MAJOR DESCRIPTOR ESTABLISHED |
| EC | ENTRY COMBINATION |
| PRINT ENTRY | ENTRY TERM, PRINT ** |
| ENTRY | ENTRY TERM, NON-PRINT ** |
| FX | FORWARD CROSS REFERENCE (SEE ALSO REFERENCE) |
| HN | HISTORY NOTE |
| MH | MESH HEADING |
| MH_TH | MESH HEADING THESAURUS ID [= MHTH in ELHILL MESH] |
| MN | MESH TREE NUMBER |
| MR | MAJOR REVISION DATE |
| MS | MESH SCOPE NOTE |
| N1 | CAS TYPE 1 NAME |
| OL | ONLINE NOTE |
| PA | PHARMACOLOGICAL ACTION |
| PI | PREVIOUS INDEXING |
| PM | PUBLIC MESH NOTE |
| RECTYPE | RECORD TYPE [= RY in ELHILL MESH ] |
| RH | RUNNING HEAD, MESH TREE STRUCTURES |
| RN | CAS REGISTRY/EC NUMBER/UNII CODE |
| RR | RELATED REGISTRY NUMBER |
| ST | SEMANTIC TYPE * |
| UI | UNIQUE IDENTIFIER |
* = not in ELHILL MeSH
** ENTRY and PRINT ENTRY terms may have several subfields, with each subfield entry separated from another by a bar. A final string "map" indicates which value goes with which subfield. For example,
PRINT ENTRY = Avian Sarcoma|T050|T191|NON|EQV|NLM (1994)|930624|abbcdef
In the final string of characters - 'abcdeef' - each letter corresponds to a specific subfield and indicates the position of the subfield and any position repeats:
| a | the term itself |
| b | SEMANTIC TYPE* |
| c | LEXICAL TYPE* |
| d | SEMANTIC RELATION* |
| e | THESAURUS ID |
| f | DATE |
| s | SORT VERSION |
| v | ENTRY VERSION |
* = not in ELHILL MeSH
Last Reviewed: August 3, 2016