This page lists specific source data elements and provides information on their representation in the UMLS Metathesaurus.
Documentation on the obo format is available at: http://www.geneontology.org/
Content is structured as tag-value pairs, with optional trailing modifiers. Tag-value pairs consist of a tag name, an unescaped colon, the tag value, and a newline.
Consult the GO OBO format documentation at www.geneontology.org for additional details.
|id||Unique identifier||MRCONSO.CODE, MRCONSO.SDUI|
TTY = "PT" if there is no is_obsolete flag
TTY = "OP" if is_obsolete = true
|comment||Comment||MRSAT.ATN = "HPO_COMMENT"|
TTYs are assigned based on the value of the scope
identifier and the presence or absence of the
REL values are assigned based on the value of the scope identifier
Optional dbxref lists included in synonym tags are represented in MRSAT.ATN = "REF"
Optional synonymtypedef values in synonym tags are represented in MRSAT.ATN = SYN_QUALIFIER
|is_a||Indicates a subclassing relationship between one term and another||Used to create a hierarchy, represented in MRHIER.RRF and MRREL.RRF (REL = "PAR," "CHD"; RELA = "isa")|
|is_obsolete||Indicates if a term is obsolete||Used to compute termtype assignments|
|replaced_by||Gives a term which replaces an obsolete term||MRREL.REL = "RO"
MRREL.RELA = "replaced_by/replaces"
|consider||Gives a term which may be an appropriate substitute or an obsolete term, but requires human review||MRREL.REL = "RO"
MRREL.RELA = "consider/consider_from"
|creation_date||Indicates the creation time and date of the term||MRSAT.ATN = "DATE_CREATED"|
|alt_id||An alternative (secondary) identifier||MRSAT.ATN = "SID"|