Fig. 2. Strain differences in MAC levels for sevoflurane. Significantly smaller mean (± SD) end-tidal sevoflurane were required to eliminate movement response to tail clamp in Dahl Salt Sensitive rats (SS) and SS.BN.16 consomics compared with Brown Norway (BN) and SS.BN.13 animals. There were no differences between SS versus SS.BN.16 or between BN versus SS.BN.13. *P ≤ 0.05 versus BN and SS.BN.13, pooled (spontaneous and controlled ventilation;) n = 20–22 for each group.