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Summary

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.

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Download

Use the following URIs to download this ontology:

http://purl.obolibrary.org/obo/ro.owl
http://purl.obolibrary.org/obo/ro.obo

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.

Products

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-eco.owl	Ecology subset
ro/subsets/ro-neuro.owl	Neuroscience subset	For use in neuroscience [page]