Treatments that change slo expression alter drug responsiveness. (A) Recovery of WT flies from 0.3% benzyl alcohol sedation after pretreatment with chloroform compared with nonpretreated control flies. (B) Recovery of WT flies from 0.3% benzyl alcohol after pretreatment with 0.15, 0.3, or 0.4% benzyl alcohol compared with nonpretreated control flies. * indicates that the 0.3 and 0.4% pretreatments are significantly different (**, P < 0.01) from control (whereas the 0.15% pretreatment is not). (C) Recovery of WT flies from 0.3% benzyl alcohol sedation after pretreatment with toluene compared with nonpretreated control flies. (D and E) Recovery of WT flies from 0.3% benzyl alcohol sedation after pretreatment with CO2 (D) or heat followed by CO2 (E) compared with nonpretreated control flies. (F) Recovery of WT flies from benzyl alcohol after pretreatment with heat and CO2 compared with flies pretreated with heat. In A, C, and F, * indicates that the recovery curves are significantly different from control (*, P < 0.05; **, P < 0.01). (Error bars are SEM calculated for each data point.)