Figure 1.

Light microscopy of the human endolymphatic duct (ED) at three different intervals: proximal (A), intermediate (B), and distal (C) ED. The specimen was cut transversely and the light microscopy pictures show the vestibular aqueduct with the ED embedded in loose connective tissue. Note the veins of the vestibular aqueduct and the many bone channels containing blood vessels embedded in loose connective tissue. L, lumen of the ED; CT, connective tissue; B, bone matrix; and V, vein of the vestibular aqueduct.