Canna~Fangled Abstracts Crosstalk between Dopamine D2 receptors and cannabinoid CB1 receptors regulates CNR1 promoter activity via ERK1/2 signaling. Crosstalk between Dopamine D2 receptors and cannabinoid CB1 receptors regulates CNR1 promoter activity via ERK1/2 signaling. Chiang…Freedom WaresAugust 22, 2013