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The part of the ovarian cycle between ovulation and the start of a new follicular phase, so dominated by the presence of the corpus luteum and the progesterone it produces. Normally between 11 and 16 days in length. Extended by the action on the corpus luteum of human chorionic gonadotropin (hCG) if implantation of the embryo is successful. Shorter cycles can interfere with implantation (a luteal phase defect). Corresponds with the secretory phase of the menstrual cycle
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