in 11 rats the descending projections from the ventrolateral medullary medial reticular formation , the medullary raphe nuclei and the area of the nucleus coeruleus and subcoeruleus to lumbar motoneuronal cell groups were studied by means of electron microscopical autoradiography after [ 3h ] leucine injections in the respective brainstem areas .
C0034671
raphe
C0006121
brainstem