within the brainstem , moderate levels of nt binding sites were observed in the lateral habenular nuclei , the ventral tegmental area of tsai , nucleus tegmentipedunculopontinus , pars compacta ( comparable to the mammalian substantia nigra , pars compacta ) , locus coeruleus , and the nucleus subcoeruleus dorsalis .
C0038590
substantia
C0175412
pars compacta