hematopoietic system
http://purl.obolibrary.org/obo/UBERON_0002390
UBERON:0002390
http://purl.obolibrary.org/obo/doid.owl
http://purl.obolibrary.org/obo/UBERON_0000467
http://purl.obolibrary.org/obo/UBERON_0004120