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Fig. 2 | BMC Pregnancy and Childbirth

Fig. 2

From: Competent blastocyst and receptivity endometrium improved clinical pregnancy in fresh embryo transfer cycles: a retrospective cohort study

Fig. 2

Days of the menstrual cycle and the blastocyst WOI. Implantation is a complex process involving both the blastocyst and the maternal endometrium, and their interaction can only occur during a limited defined period, known as the WOI. Well-developed blastocysts adhere before or after the WOI and then miss the WOI. Note: E2: Estradiol, OVU: Ovulation, P4: Progesterone, WOI: window of implantation

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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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