gray matter of forebrain
http://purl.obolibrary.org/obo/UBERON_0019264
http://purl.obolibrary.org/obo/UBERON_0001890
UBERON:0019264
http://purl.obolibrary.org/obo/UBERON_0003528
http://purl.obolibrary.org/obo/UBERON_0002020