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Fig. 4 | Reproductive Biology and Endocrinology

Fig. 4

From: A novel and compact review on the role of oxidative stress in female reproduction

Fig. 4

The trends of HCG, estrogen and progesterone during pregnancy. The yellow line represents the change in HCG. The green line represents the change in progesterone. The red line represents the level of estrogen. The final results of ovulation include two impacts, one of which is output in the body, called menstruation, and the other of which is combines with sperm, called fertilization. The level of hormones changes after fertilization; in particular, hCG immediately increases to the highest level. However, the levels of estrogen and progesterone slowly increase to stable concentrations, while hCG begins to drop to a certain extent

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