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Occurrence of phase of the menstrual cycle in nidation

State the term nidation and in which phase of the menstrual cycle in nidation occur?

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Nidation is the implantation of the embryo in uterus. Nidation takes place just about the 7th day after fecundation, means 7 to 8 days after ovulation (clearly, it occurs only if fecundation too occurs). This is occurring since, in the luteal stage the progesterone level is high and endometrium is in its best situation to obtain the embryo.

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