Environmental conditions, treatments and exposures ontology	National Drug File - Reference Terminology	Source
http://purl.bioontology.org/ontology/NDFRT/N0000147388	http://purl.obolibrary.org/obo/CHEBI_32234	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000181824	http://purl.obolibrary.org/obo/CHEBI_36709	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000145989	http://purl.obolibrary.org/obo/CHEBI_23965	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000148260	http://purl.obolibrary.org/obo/CHEBI_32146	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000146419	http://purl.obolibrary.org/obo/CHEBI_28680	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000147897	http://purl.obolibrary.org/obo/CHEBI_28925	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000146417	http://purl.obolibrary.org/obo/CHEBI_5441	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000145919	http://purl.obolibrary.org/obo/CHEBI_27732	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000146157	http://purl.obolibrary.org/obo/CHEBI_49575	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000146924	http://purl.obolibrary.org/obo/CHEBI_8427	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000022443	http://purl.obolibrary.org/obo/CHEBI_17306	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000023135	http://purl.obolibrary.org/obo/CHEBI_32063	LOOM
http://purl.bioontology.org/ontology/NDFRT/N0000146196	http://purl.obolibrary.org/obo/CHEBI_31835	LOOM