The Experimental Factor Ontology (EFO) provides a systematic description of many experimental variables available in EBI databases. It combines parts of several biological ontologies, such as anatomy, disease and chemical compounds. The scope of EFO is to support the annotation, analysis and visualization of data handled by the EBI Functional Genomics Team.

Preferred Prefix
functional genomics ontology
Homepage Repository OBO OWL
Trish Whetzel   0000-0002-3458-4839   twhetzel
Pattern for Local Unique Identifiers

Local identifiers in Experimental Factor Ontology should match this regular expression:

Example Local Unique Identifier
0005147   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from Experimental Factor Ontology should match this regular expression:

Example CURIE
2010 Modeling sample variables with an Experimental Factor Ontology.
Metaregistry Experimental Factor Ontology

The metaregistry provides mappings between the Bioregistry and other registries. There are 11 mappings to external registries for efo with 2 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate
AberOWL aberowl EFO
AgroPortal agroportal EFO
BioContext biocontext EFO
Biolink Model Registry biolink EFO
BioPortal Prefixes bioportal EFO
Cellosaurus Registry cellosaurus EFO
FAIRSharing FAIRSharing logo fairsharing FAIRsharing.1gr4tz logo miriam efo
Name-to-Thing Name-to-Thing logo n2t efo
Ontology Lookup Service Ontology Lookup Service logo ols efo
OntoBee ontobee EFO

Providers are various services that resolve CURIEs to URLs. The example CURIE efo:0005147 is used to demonstrate the provides available for efo. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.

Name Metaprefix URI
Experimental Factor Ontology efo
Bioregistry bioregistry miriam
Name-to-Thing n2t
None ebi
Extra Providers

Additional providers curated in the Bioregistry are listed here.

Code Name URL
ebi EFO through Functional Genomics Group (EBI)