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Medical Subject Headings

ASCII MeSH.
Data Elements for Supplementary Concept Records (formerly Supplementary Chemical Records)

Supplementary Concept Records (formerly Supplementary Chemical Records) in ASCII MeSH contain the data elements listed below, though not every record will have a value for every data element. The list includes all the elements in ELHILL file MeSH for this record type. Note that not every record has every data element. Sample record.

DADATE OF ENTRY
FRFREQUENCY
HMHEADING MAPPED-TO
IIINDEXING INFORMATION
MRMAJOR REVISION DATE
N1CAS TYPE 1 NAME
NMNAME OF SUBSTANCE
NM_TH NM TERM THESAURUS ID
NONOTE
PAPHARMACOLOGICAL ACTION
PIPREVIOUS INDEXING
RECTYPERECORD TYPE [= RY in ELHILL MESH]
RNCAS REGISTRY/EC NUMBER
RRRELATED CAS REGISTRY NUMBER
SOSOURCE
STSEMANTIC TYPE
SYSYNONYM **
THTHESAURUS ID
UIUNIQUE IDENTIFIER

** An SY term may have several subfields, with each subfield entry separated from another by a vertical bar. A final string "map" indicates which value goes with which subfield. For example,

SY = Proflox|T109|T121|TRD|NRW|ES Spanish Trade Name|041021|abbcdef   
athe term itself
bSEMANTIC TYPE*
cLEXICAL TYPE*
dSEMANTIC RELATION*
eTHESAURUS ID
fDATE

* = not in ELHILL MeSH

These subfields above apply only to SY terms. For NM terms the THESAURUS ID and SEMANTIC TYPE values may also be available, but these will be displayed as regular inline elements, rather than as sub-elements, just as in the case of Descriptors. Example:

NM = ciclesonideNM_TH = USAN (1998)ST = T110  
For additional information on these data elements see the XML MeSH Data Elements and the corresponding ASCII MeSH element in the XML MeSH Conversion Table. Note, however, that when an SY term has SEMANTIC RELATION value of 'EQV', this means that the term is equivalent to the NM in the sense that it shares the same Concept.