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Corpus Luteum

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Updated January 08, 2010

Definition: The corpus luteum is a small scar or structure that remains at the site of the ovarian follicle that released an egg during ovulation. This structure produces progesterone and estrogen, the hormones necessary to maintain a pregnancy. If pregnancy does occur, the corpus luteum will continue to function for a few months, providing the necessary hormonal support. If pregnancy does not occur, the corpus luteum simply reabsorbs and stops producing estrogen and progesterone.
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