Radiology Lexicon	BioPAX Ontology of Biological Pathways	Source
http://www.biopax.org/release/biopax-level3.owl#Protein	http://www.radlex.org/RID/RID1554	LOOM
http://www.biopax.org/release/biopax-level3.owl#Complex	http://www.radlex.org/RID/RID5757	LOOM