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Early Müllerian duct growth and fusion to form the midline uterovaginal canal. Length of the uterovaginal canal increases with developmental age. In (A) the extent of MD caudal extension is depicted at Carnegie Stages 20 to 23 (50 to 56 days). (B–D) depict fusion of the right and left MDs to form the midline uterovaginal canal, formation of the septum and its subsequent disappearance. From Robboy et al (2017) with permission.
