after large injections , 25-38 % of the labeled cells were located in the brainstem reticular formation , 10-16 % in the pretectal nuclei , 10-15 % in the hypothalamus , 7-9 % in the zona incerta , 3-9 % in the fields of forel , 4-5 % in the nucleus locus coeruleus , 3-5 % in the ventral lateral geniculate body , 2-4 % in the superior colliculus , 3 % in the periaqueductal gray , and 14-15 % in other parts of the brainstem .
C0006121
brainstem
C0023951
nucleus