CNR2 and red-green color blindness: Two-way ANOVA revealed no significant effects of the drug factor (males: F(1,30) = 0.208, ns; females: F(1,29) = 0.024, ns), the stress factor (males: F(1,30) = 2.174, ns; females: F(1,29) = 0.039, ns), or stress × drug interaction (males: F(1,30) = 0.290, ns; females: F(1,29) = 0.093, ns), suggesting that in both sexes, neither UCMS nor CBD affected cnr2 expression.