anatomical system
http://purl.obolibrary.org/obo/UBERON_0000467
http://purl.obolibrary.org/obo/UBERON_0000062
http://purl.obolibrary.org/obo/UBERON_0000468
UBERON:0000467
http://purl.obolibrary.org/obo/UBERON_0000061