Chromatin Regulator Ontology	Neuroscience Information Framework (NIF) Cell Ontology	Source
http://purl.obolibrary.org/obo/BFO_0000040	http://www.ifomis.org/bfo/1.1/snap#MaterialEntity	LOOM
http://purl.obolibrary.org/obo/CL_0000540	http://ontology.neuinfo.org/NIF/BiomaterialEntities/NIF-Cell.owl#sao1417703748	LOOM
http://purl.obolibrary.org/obo/CL_0000000	http://ontology.neuinfo.org/NIF/BiomaterialEntities/NIF-Cell.owl#sao1813327414	LOOM