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Fig. 7. (A) Caudal region of the saccular epithelium immediately after noise
exposure (day 0). Arrows point to examples of TUNEL-labeled (apoptotic) cells
visualized by brown DAB labeling. Scale bar, 50 µm. (B) TUNEL-labeled cells
in the goldfish saccule (gray) and lagena (black) at specific days following
48 h white noise exposure. Labeled cells were counted for each whole-mount
epithelium. Values are means ± s.e.m.; N=6 (controls + days
0-8); N=2 (baseline). Asterisks indicate significantly elevated cell
counts relative to baseline (B) and control (C) values
(P<0.05).