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The menstrual cycle NARRATED video. 1970-01-01T00:00:00+00:00This video has been updated with a new voice. If you prefer the original Youtube version please email us. Female reproductive system: hormonal control of the menstrual cycle including the ovarian and uterine cycle, involvement of the pituitary gland a...PT166Shttps://d38zjy0x98992m.cloudfront.net/73349844-d3cc-11e3-b500-f2b86e40979d/menstrual_cycle_narrated_xlarge.jpghttps://d38zjy0x98992m.cloudfront.net/73349844-d3cc-11e3-b500-f2b86e40979d/menstrual_cycle_narrated_mp4_hd_video.mp4
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