OntoBiotope Relations Ontology Source
http://purl.obolibrary.org/obo/OBT_000555 http://purl.obolibrary.org/obo/GO_0016020 LOOM
http://purl.obolibrary.org/obo/OBT_000056 http://purl.obolibrary.org/obo/CL_0000000 LOOM