What is the first stage of the menstrual cycle (that lasts 4-7 days) known
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as?
What is the second stage of the menstrual cycle (lasting 8-13 days) known as?
What is the third stage of the menstrual cycle, occurring at day 14, known as?
What is the final stage of the menstrual cycle known as?
What occurs during the follicular phase of the menstrual
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