This is the project page for RO, the OBO Relations Ontology
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.
This is the main PURL for the ontology:
For all download products, see the RO OBO page
Currently the optimal way to browse RO is to use Protege and inspect ro.owl
See the list of relations on OntoBee -- note that sometimes OntoBee fails to display the full hierarchy
How to cite
Examples of usage
Requesting new relations
Use the github issue tracker and/or the obo-relations mail list.
RO includes a number of macro or shortcut relations. E.g
For more information, see Shortcut Relations
RO combines multiple relations from different biological sub-domains into one ontology. Sometimes these relations are very specialized and of limited use outside that domain. For more on extracting specific modules, see:
See RO Modules.
RO replaces OBO_REL
The predecessor of RO was OBO_REL. Many of the relations in OBO_REL have been ceded to BFO. See DifferencesWithOldRO
Coordination with BFO
For details on how RO coordinates with BFO, See ROAndBFO .