Gene Ontology Extension Microarray and Gene Expression Data Ontology Source
http://purl.obolibrary.org/obo/GO_0018995 http://mged.sourceforge.net/ontologies/MGEDOntology.owl#Host LOOM
http://purl.obolibrary.org/obo/GO_0005575 http://mged.sourceforge.net/ontologies/MGEDOntology.owl#CellularComponent LOOM