Fig. 1.

Histological verification of unilateral surgical labyrinthectomies. Photomicrographs of horizontal sections through the unoperated (A) and operated (B) ears of case 9311 are shown, with rostral toward the left. The medial aspect of the section is oriented upward inA and downward in B andC. Note the intact sacculus in A(black arrow) and the complete ablation of the sacculus on the operated side (B, black arrow).Open arrows show the unaffected Scarpa’s ganglia on both the unoperated (A) and operated (B) sides. The Scarpa’s ganglion from the operated side is shown at higher magnification in C. Scale bars: A,B, 500 μm; C, 100 μm.