As I See It In the embryo the paired paramesonephric ducts or Müllerian ducts   run down the side of the urogenital ridge ending up at the Müllerian eminence in the primitive urogenital sinus Müllerian ducts exist in embryos of both sexes In females they develop to form the uterus, cervix and Fallopian tubes In males they are lost Sometimes embryonic tissue becomes trapped in a secret pocket of a Müllerian duct biding its time multiplying layers of cells that later in life wreak havoc with the immune system Had you been my brother this would never have happened  “Mikaela Nyman”

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