Evidence for a novel functional role of cannabinoid CB2 receptors in the thalamus of neuropathic rats 22 Nov Dr D Cerebral hypoxia-ischemia and middle cerebral artery occlusion induce expression of the cannabinoid CB2 receptor in the brain. Effects of cannabinoid receptor agonists on neuronally-evoked contractions of urinary bladder tissues isolated from rat, mouse, pig, dog, monkey and human.