If an egg is not fertilized after being released from the ovary, it will degrade and be shed during menstruation.
After being released from the ovary, if an egg is not fertilized, it will degrade and be shed either in the uterine tube or in the uterus, where it may be expelled during menstruation. Without fertilization, the egg does not implant into the uterus and is not reabsorbed by the ovary; instead, it disintegrates naturally.
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