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Secretory phase of menstrual cycle

oboestr
in Biology

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I think the ovum released during ovulation is viable for a couple days, after which it disintegrates if not fertilized within that period. Do we have any insight into why the secretory phase of the menstrual cycle (humans of course) lasts fourteen days in preparation of a fertilized egg (zygote) developing into a blastocyst and implanting into the uterine endometrium?

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