(1) Anohymena:During embryonic development, it is caused by the failure of the vaginal bud-like protrusions of the urogenital sinus to be penetrated. Menstrual blood retention
(1) Anohymena:During embryonic development, it is caused by the failure of the vaginal bud-like protrusions of the urogenital sinus to be penetrated. Menstrual blood retention