Increasing estrogen levels throughout the follicular period on the menstrual cycle results in endometrial glandular proliferation. Through the luteal phase, progesterone stages increase, leading to the endometrium to go through secretory alterations. If an embryo would not implant in the course of the cycle, estrogen and progesterone stages slide, resulting https://bookmarkjourney.com/story18570507/assisted-reproductive-technology-for-dummies