Table 2.

Correlation between published antagonist affinities for α_1A-, α_1B- and α_1D- adrenoceptor ligand binding sites (see Honner & Docherty for affinity values of nine antagonists; additional values for RS 100329 taken from Williams et al., 1999) and antagonist affinities for ligand binding in rat vas deferens (Table 1), using both high- and low-affinity values obtained for BMY 7378

	α1A	α1B	α1D
BMY 7378 high-affinity site (9.20)
r	0.23	0.17	0.78
Significance	NS	NS	P<0.01
BMY 7378 low-affinity site (7.17)
r	0.78	0.47	0.57
Significance	P<0.01	NS	NS

NS=not significant.