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Figure 4. A histogram displaying the mean threshold shift from baseline for the Ad.GDNF / noise animals. The left (inoculated) ears are better than the right ears in all tested frequency, but the variability is substantial.

Figure 4. A histogram displaying the mean threshold shift from baseline for the Ad.GDNF / noise animals. The left (inoculated) ears are better than the right ears in all tested frequency, but the variability is substantial.