Early Pregnancy Ontology	Gene Ontology	Source
http://www.semanticweb.org/ontologies/epo.owl#OPPIO_a000102	http://purl.obolibrary.org/obo/GO_0042600	LOOM
http://www.semanticweb.org/ontologies/epo.owl#OPPIO_p000004	http://purl.obolibrary.org/obo/GO_0009566	LOOM
http://www.semanticweb.org/ontologies/2009/3/ontoDPN.owl#OPPIO_a000202	http://purl.obolibrary.org/obo/GO_0005623	LOOM