highly significantp < 0.001
Conversely, wild-type CaMK- CB1 +/+ mice showed normal sensitivity to the analgesic effect of THC ( p < 0.001; Figure 6 B), whereas the mutant littermates CaMK- CB1 −/− did not respond to the injection of the cannabinoid drug ( p > 0.05; Figure 6 B), as shown by a highly significant genotype × treatment interaction (F 1,36 = 17.9, p < 0.001; Figure 6 B).