Vertebrate Taxonomy Ontology	Read Clinical Terminology Version 2	Source
http://purl.bioontology.org/ontology/RCTV2/9c31.00	http://purl.obolibrary.org/obo/VTO_0082155	LOOM
http://purl.bioontology.org/ontology/RCTV2/PG1y000	http://purl.obolibrary.org/obo/VTO_9006652	LOOM
http://purl.bioontology.org/ontology/RCTV2/E275200	http://purl.obolibrary.org/obo/VTO_0026218	LOOM