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One of the cardinal signs of anovulation is irregular or absent menstrual periods. Oligomenorrhea is defined as more than 36 days between menstrual cycles or fewer than eight cycles per year.3In the absence of pregnancy, menstruation follows ovulation by approximately 14 days. Because menstruation ...
progesterone. Within this fixed structure, the individual components continue to grow, resulting in more tortuous glands and increased coiling of the spiral arteries. Inside the glandular cells, vacuoles move from an intracellular to an intraluminal location approximately 7 days postovulation. The implant...