Table 4. Log(IC₅₀) and maximal responses for ADO- and A_2A-selective agonist CGS.

	Log(IC50)			% Decrease from Basal $P_{\mathrm{s}}^{\text{RSA}}$
	Arteriole	Venule	Maximal concentration	Arteriole	Venule
ADO	−9.8±0.2*†	−8.4±0.2	ADO 10 5 M	44.4±2.9	54.0±5.4
CGS	−7.5±1.1	−8.5±0.4	CGS 10−6 M	45.9±4.8	41.0±7.7

Values are means ± SE. CGS, CGS21680; $P_{\mathrm{s}}^{\text{RSA}}$, permeability to rat serum albumin.

^*P < 0.05 vs. CGS in arteriole.

^†P < 0.05 vs. ADO in venule.