Comparative Data Analysis Ontology	BRENDA Tissue and Enzyme Source Ontology	Source
http://purl.obolibrary.org/obo/BTO_0001156	http://purl.obolibrary.org/obo/CDAO_0000140	LOOM
http://purl.obolibrary.org/obo/BTO_0000148	http://purl.obolibrary.org/obo/CDAO_0000024	LOOM