following injections of [ 3h ] leucine into the formatio reticularis gigantocellularis ( rgc ) , reticularis pontis caudalis ( rpc ) , reticularis pontis oralis ( rpo ) , reticularis mesencephali ( rmes ) , or the locus coeruleus ( lc ) of the rat , autoradiographic study revealed prominent reticuloreticular projections from all areas and secondary projections onto cranial nerve motor nuclei from most areas within the brain stem .
C0023951
locus coeruleus
C0006121
brain stem