AUC ratios of triazolam and its metabolites in WT, 2c3aKO, and hCYP3A/2c3aKO mice Data are expressed as means ± S.D. (n = 4 per group). *P < 0.05; **P < 0.01 compared with WT (one-way ANOVA with a post hoc test of Scheffé’s F test).