Vertebrate Trait Ontology	Radiation Biology Ontology	Source
http://purl.obolibrary.org/obo/VT_0010299	http://purl.obolibrary.org/obo/GO_0001525	LOOM
http://purl.obolibrary.org/obo/VT_0010300	http://purl.obolibrary.org/obo/GO_0001570	LOOM