RO is a collection of relations intended primarily for standardization across ontologies in the OBO Foundry and wider OBO library. It incorporates ROCore upper-level relations such as part of as well as biology-specific relationship types such as develops from.
See the site Menu for more info
Use the following URIs to download this ontology:
Note that the source ontology is OWL - the OBO version may have less axioms. Another difference between the two formats is that the OWL makes use of imports, whereas everything is combined into one with the obo file.
|ro.owl||Relation Ontology||Canonical edition|
|ro.obo||Relation Ontology in obo format||The obo edition is less expressive than the OWL, and has imports merged in|
|ro.json||Relation Ontology in obojson format|
|ro/core.owl||RO Core relations||Minimal subset intended to work with BFO-classes [page]|
|ro/ro-base.owl||RO base ontology||Axioms defined within RO and to be used in imports for other ontologies [page]|
|ro/subsets/ro-interaction.owl||Interaction relations||For use in ecology and environmental science|
|ro/subsets/ro-neuro.owl||Neuroscience subset||For use in neuroscience [page]|
- RO is used for annotation extensions in the GO and GO Causal Activity Models.