small horseradish peroxidase injections in the perigeniculate nucleus ( pgn ) or the lateral geniculate nucleus ( lgn ) gave retrograde labeling of many cells in the pontomesencephalic reticular formation ( rf ) , the nuclei raphe dorsalis and centralis linearis , locus coeruleus , nucleus of the optic tract and nucleus parabigeminalis .
C0007634
cells
C0007610
nuclei