anus
http://purl.obolibrary.org/obo/UBERON_0001245
http://purl.obolibrary.org/obo/UBERON_0000931
http://purl.obolibrary.org/obo/UBERON_0001555
UBERON:0001245
http://purl.obolibrary.org/obo/UBERON_0000161
http://purl.obolibrary.org/obo/UBERON_0004121