in adult rats , locus coeruleus neurons which extend axons to the spinal cord are found only at mid-rostrocaudal levels of the nucleus , where they are essentially confined to its ventral , wedge-shaped half ( satoh et al . 1980 ; westlund et al . 1983 ; loughlin et al . 1986 ) .
C0027882
neurons
C0004461
axons