the most prominent demonstration of aii-like immunoreactivity was observed in fiber profiles containing densely stained varicosities , which were present in many neuroanatomical subdivisions of the brain and brain stem including anterior and middle hypothalamus , basal ganglia , thalamus , locus coeruleus , nucleus of the solitary tract , limbic structures , and reticular formation .
C0006104
brain
C0175518
nucleus of the solitary tract