Table 2.

Distribution of NPBW₁ and its homologue in human, mouse and rat

	Human		Mouse	Rat
	NPBW1	NPBW2	NPBW1	NPBW1
CNS tissues
Cerebellum	−a	+a	−b,c	−a,b,c
Cerebral cortex	ND	ND	−b,c	+a,b,c
Parietal cortex	−a	++a	−b,c	−c
Hippocampus	+++a	+++a	+b,c	+a,b,c
Amygdala	+++a	+++1	+++b,c	+++a,b,c,d
Hypothalamus	−a	−a	+++b,c	+++a,b,c,d
Thalamus	+a	++a	+b,c	++a,b,c
Caudate nucleus	−a	++a	−b,c	−c
Substantia nigra	+a	+a	−b,c	−c
Corpus callosum	+a	+a	−b,c	−c
Bed nucleus of the stria terminalis	ND	ND	++b,c	+++c
Dorsal vagal complex	ND	ND	−b,c	++c
Periaqueductal grey	ND	ND	−b,c	++c
Superficial grey layer of superior colliculus	ND	ND	−b,c	++c
Medulla oblongata	ND	ND	ND	++a
Spinal cord	−a	−a	ND	++a
Peripheral tissues
Pituitary gland	++a,b	++a	ND	+a
Adrenal gland	++a	++a	ND	−a
Testis	+a	+1	ND	+a
Uterus	−a	−a	ND	+++a

Expression of receptors NPBW₁ or NPBW₂: ND, not determined; –, not detected; +, low levels; ++, moderate levels; +++, high levels, as determined by

^aRT–PCR.

^bIn situ hybridisation.

^cIn vitro autoradiography or

^dImmunocytochemistry. These data are from Brezillon et al. (2003), Fujii et al. (2002), Lee et al. (1999), O'Dowd et al. (1995), Singh et al. (2004) and Tanaka et al. (2003).