PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16959235-4 2007 Here, we present evidence that zebrafish Pbx proteins cooperate with Engrailed to compartmentalize the midbrain by regulating the maintenance of the midbrain-hindbrain boundary (MHB) and the diencephalic-mesencephalic boundary (DMB). dmb 228-231 engrailed Drosophila melanogaster 69-78