it was found that neurons within certain regions were consistently stained by both mediamthese reactive neurons belong to the extrapyramidal motor system ( globus pallidus , substantia nigra ( pars diffusa ) , red nucleus , pontine and mesencephalic reticular formation ) , to certain cranial nerve nuclei ( oculomotor , trochlear , abducens , mesencephalic trigeminal , vestibular ) and to relay nuclei of the auditory pathway ( superior olivary nucleus and nucleus of the trapezoid body ) .
C0038590
substantia nigra
C0025462
mesencephalic