Table 1

Effect of GDP concentration on the ability of three cannabinoid receptor agonists to stimulate [³⁵S]GTPγS binding in rat cerebellar membranes

Agonist	GDP concentration	E_max
	μM	% Stimulation of binding
CP 55,940	10	61 (32–91)
	100	114 (97–131)
WIN 55212-2	10	89 (75–109)
	100	156 (144–169)
THC	10	51 (46–57)
	100	N/A

NA, not applicable; no significant concentration-dependent stimulation.
The numbers in parentheses represent 95% confidence limits.