part_of part of part of develops from adjacent to brain forebrain midbrain forebrain-midbrain boundary ZFA:0001367 forebrain-midbrain boundary region An anatomical boundary that adjacent_to a forebrain and adjacent_to a midbrain. EMAPA:36449 TAO:0001367 UBERON:0005075 diencephalic-mesencephalic boundary forebrain midbrain boundary presumptive forebrain midbrain boundary anatomical junction