part of part of midbrain tegmentum substantia nigra pars compacta pedunculopontine tegmental nucleus regional part of brain raphe nuclei midbrain raphe nuclei TODO - check. note BTO class is placed here as it is placed in hindbrain midbrain raphe HBA:9455 raphe nucleus DHBA:12222 MBA:165 raphe nuclei of tegmentum of midbrain MESH:D066267 FMA:77787 midbrain raphe nuclei BTO:0003387 nuclei raphes tegmenti mesencephali Midline nuclei found in the midbrain, includes the dorsal raphe nucleus and the rostral linear nucleus of raphe. BIRNLEX:1676 UBERON:0007412 set of raphe nuclei of tegmentum of midbrain