FIG. 3. N-hydroxy-PhIP O-sulfotransferase activities in rapid and slow acetylator congenic hamster tissue cytosols. Data represent mean ± SE for three to eight individual hamsters. Solid bars represent homozygous rapid acetylators; open bars represent homozygous slow acetylators. Abbreviations: LV, liver; SI, small intestine; CE, cecum; CN, total colon; RT, rectum; PS, pancreas; PT, prostate; HT, heart; ST, stomach; ES, esophagus. Levels were undetectable in heart and stomach.