CNR1 and neuroblastoma: In the murine neuroblastoma cell line N18TG2 endogenously expressing CB1R (but not CB2R), treatment with the non-selective CB1/2R agonists 2-arachidonoylglycerol (2-AG), CP55940, or WIN55212-2 (up to 1 μM) failed to evoke Ca2+ mobilization using Fluo-4 fluorescence able to detect a bradykinin-mediated response [3].