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Effects of ouabain (hatch columns), digoxin (crosshatch columns), and digitoxin (solid columns) on the cytochrome P450scc enzyme and 3β-HSD activities in rat granulosa cells after incubation with different doses of 25-OH-cholesterol (top) or pregnenolone (bottom) for 2 h. *P<0.05, **P<0.01 compared with vehicle group, respectively. ++P<0.01 compared with precursor=0 M. Each column represents mean±s.e.mean.
