Dose effects of ananadamide and other cannabinoid ligands on IL-3–induced ³H-TdR incorporation of 32Dcl3 cells. Cells were cultured serum-free with IL-3 (10 ng/mL) and titrated concentrations (0 to 10 μmol/L) of anandamide (▪), WIN 55212-2 (○), Δ⁸-THC (□), Cannabinol (•), Cannabidiol (▵), and CP55,940 (⋄).