Figure 1From: Future possibilities in the prevention of breast cancer: Role of genetic variation in breast cancer preventionEstrogen metabolism in the ovaries and breast epithelium and fourcandidate genes that may play a role in breast cancer etiology. The genes ofinterest are the cytochrome P450c17α gene (CYP17), the aromatasecytochrome P450 gene (CYP19), the 17β -hydroxysteroiddehydrogenase 1 gene (HSD17B1), and the estrogen receptor alpha gene(ESR1).Back to article page