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. Author manuscript; available in PMC: 2017 May 1.
Published in final edited form as: Maturitas. 2016 Feb 3;87:5–17. doi: 10.1016/j.maturitas.2016.01.015

Figure 3.

Figure 3

Ovarian Hormone Levels in Reproductive SenescenceA) Rodents commonly enter a persistent estrus state during reproductive senescence (estropause), characterized by moderate to high 17β-estradiol levels and moderate progesterone, LH, and FSH levels as a result of disrupted feedback between the ovaries and hypothalamus/pituitary. b) Human reproductive senescence (menopause) is characterized by low, sometimes undetectable, levels of 17β-estradiol and progesterone, but increased levels of the gonadotropins, FSH and LH.