Fig. 5. Comparison of propofol hydroxylation activities to activities mediated by CYP2B6 (S -mephenytoin N -demethylation and bupropion hydroxylation) and CYP2C9 (R -flurbiprofen hydroxylation), as well as immunoquantified CYP2B6 protein content measured in the same set of human liver microsomes (n = 34 for comparisons between activities; n = 12 for comparison to immunoquantified CYP2B6). Also shown is the Pearson product-moment correlation value (r) for each comparison.