in the brainstem , pha-l-labeled fibers and their terminals were observed in the medial reticular formation , the cranial motor nuclei ( iii , iv , v , vi , vii , xii ) , the vestibular complex , the lc complex , the raphe nuclei , the periaqueductal gray , the red nucleus , the edinger-westphal nucleus and the interstitial nucleus of cajal .
C0006121
brainstem
C0034671
raphe nuclei