Neurodegenerative Disease Data Ontology Upper-Level Cancer Ontology Source
http://purl.obolibrary.org/obo/ID_0000029 http://purl.obolibrary.org/obo/BFO_0000034 LOOM
http://purl.obolibrary.org/obo/ID_0000016 http://purl.obolibrary.org/obo/BFO_0000019 LOOM