Figure 2From: Future possibilities in the prevention of breast cancer: Role of genetic variation in breast cancer preventionGeometric mean serum estradiol (E2) concentrations among youngnulliparous women on days 11 and 22 of the menstrual cycle by CYP17genotype. Day 11 E2, P for trend 0.04; day 22 E2, P for trend0.06.Back to article page