midbrain reticular formation
http://purl.obolibrary.org/obo/UBERON_0002639
http://purl.obolibrary.org/obo/UBERON_0002142
http://purl.obolibrary.org/obo/UBERON_0001943
http://purl.obolibrary.org/obo/UBERON_0002275
http://purl.obolibrary.org/obo/UBERON_0007245
http://purl.obolibrary.org/obo/UBERON_0019267