United States National Library of Medicine National Institutes of Health

2008AB NCBI Taxonomy Source Information

Counts
Relationship Relationship Attribute Count (MRREL.RRF)
PAR * 354893
SY has_expanded_form 1805
Background
  • * Indicates blank relationship attribute (rela); not all relationships are assigned an attribute.
  • Orange colored rel/rela pairs indicate that the current row is an inverse relationship of the row above it. All relationships in MRREL.RRF are bi-directional.
  • Metathesaurus relationships are traditionally read from right to left.
  • Every row in MRREL.RRF has a RUI (relationship unique identifier).
  • Samples below are taken from MRREL.RRF, although not every field is shown. Associated terms (str) from MRCONSO.RRF are also shown for clarity.
  • Relationship abbreviations appear in MRREL, i.e., SY.
Relationship Definitions
  • AQ: allowed qualifier
  • CHD: has child (narrower hierarchical term)
  • DEL: deleted concept
  • PAR: has parent (broader hierarchical term)
  • QB: can be qualifier by
  • RB: has a broader relationship
  • RL: has similar or like relationship
  • RN: has narrower relationship
  • RO: has relationship other than synonymous, narrower or broader
  • RQ: related and possibly synonymous
  • SIB: has sibling
  • SY: source-asserted synonymy
Sample Data
PAR  (return to top)
cui1 aui1 stype1 str rel cui2 aui2 stype2 str
C1014436 A2123989 SCUI Chirita sinensis PAR C1014435 A2123987 SCUI Chirita
C1014435 A2123987 SCUI Chirita CHD C1014436 A2123989 SCUI Chirita sinensis
C1683397 A9273203 SCUI Phloeocharinae PAR C1645480 A9288318 SCUI Tachyporine group
C1645480 A9288318 SCUI Tachyporine group CHD C1683397 A9273203 SCUI Phloeocharinae
C1503124 A7136855 SCUI bacterium CYB27 PAR C1624036 A2228077 SCUI unclassified Bacteria (miscellaneous)
C1624036 A2228077 SCUI unclassified Bacteria (miscellaneous) CHD C1503124 A7136855 SCUI bacterium CYB27
C1886621 A12856202 SCUI Flavobacteriaceae bacterium JJ-810 PAR C1022799 A2228178 SCUI unclassified Flavobacteriaceae
C1022799 A2228178 SCUI unclassified Flavobacteriaceae CHD C1886621 A12856202 SCUI Flavobacteriaceae bacterium JJ-810
C1894955 A12870089 SCUI Metopomyza flavonotata PAR C1894923 A12844225 SCUI Metopomyza
C1894923 A12844225 SCUI Metopomyza CHD C1894955 A12870089 SCUI Metopomyza flavonotata
SY  (return to top)
cui1 aui1 stype1 str rel rela cui2 aui2 stype2 str
C1054956 A2145178 AUI Gaussia <angiosperm> SY has_expanded_form C1054956 A2145175 AUI Gaussia
C1054956 A2145175 AUI Gaussia SY expanded_form_of C1054956 A2145178 AUI Gaussia <angiosperm>
C1196553 A2713960 AUI Heteropsis <butterfly> SY has_expanded_form C1196553 A2713963 AUI Heteropsis
C1196553 A2713963 AUI Heteropsis SY expanded_form_of C1196553 A2713960 AUI Heteropsis <butterfly>
C0033697 A2731426 AUI Proteus <enterobacteria> SY has_expanded_form C0033697 A0106782 AUI Proteus
C0033697 A0106782 AUI Proteus SY expanded_form_of C0033697 A2731426 AUI Proteus <enterobacteria>
C1052866 A9279453 AUI Pyronia <butterfly> SY has_expanded_form C1052866 A2191492 AUI Pyronia
C1052866 A2191492 AUI Pyronia SY expanded_form_of C1052866 A9279453 AUI Pyronia <butterfly>
C1883917 A15068358 AUI black cod <Epinephelus daemelii> SY has_expanded_form C1883917 A15038570 AUI black cod
C1883917 A15038570 AUI black cod SY expanded_form_of C1883917 A15068358 AUI black cod <Epinephelus daemelii>

Last reviewed: 09 February 2009
Last updated: 09 February 2009
First published: 09 February 2009
Metadata| Permanence level: Permanence Not Guaranteed