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. Author manuscript; available in PMC: 2021 Jun 9.
Published in final edited form as: Nutr Cancer. 2020 Jun 26;73(7):1108–1117. doi: 10.1080/01635581.2020.1784444

Figure 1.

Figure 1.

A framework indicating sites of conversion of androgen to estrogen. In premenopausal women, the ovaries are the predominant source of serum estradiol; however, in postmenopausal women, estradiol mainly comes from aromatization of adrenal and ovarian androgens in fat tissues.