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Implantation

Thursday, September 24, 2009 at 12:09 AM
Within 24 hours of the union of egg and sperm, the resulting zygote will have begun to grow by rapid cell division. It continues to divide while moving down the fallopian tube towards the uterus where the embryo will implant into the uterine wall and continue to develop throughout pregnancy. Once implantation has occurred, hormones are released in the mother's body which prevent menstruation. This is usually the first indication of pregnancy, along with tender breasts and sometimes nausea.

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