Table 2.

Comparison of diffuse sst2A receptor labeling with the density of SRIF immunoreactive fibers and axon terminals and autoradiographic sst2 receptor labeling^2-a

Region	Diffuse sst2A receptor labeling	SRIF-positive fibers and axon terminals	Preferential sst2 binding^2-b
Endopiriform nucleus	+++++	++	+++++
Claustrum	+++++	++	+++++
Hippocampal formation
Lacunosum moleculare (CA1–CA2)	+++++	+	+++++
Subiculum	+++++	+	+++++
Basolateral amygdaloid nucleus	+++++	+	+++++
Cerebral cortex
Layers V–VI	++++	+	++++
Anterior olfactory nucleus	+++	++	+++
Central gray	+++	++	+++
Lateral olfactory tract nucleus	+++	+	++++
Medial habenula	+++	+	++++
Locus coeruleus	+++	+	+++
Hippocampal formation
Dentate gyrus	++	+	+++
Substantia innominata	++	++	+
Nucleus tractus solitarius	++	++	+++
Hypothalamus	+	+++++	++
Paraventricular thalamus	+	++	++
Zona incerta	+	++	++
Substantia nigra
Pars compacta	+	+	++
Hippocampal formation
Hilus	+	+	+

↵F2-a Relative values. +, Very low signal; ++, low signal; +++, moderate signal; ++++, high signal; +++++, very high signal.
↵F2-b Based on literature data on the distribution and densities of radioautographic labeling obtained using sst2-preferring ligands (Reubi and Maurer, 1985; Krantic et al., 1989,1990; Martin et al., 1991; Schoeffter et al., 1995; Holloway et al., 1996).