Table 2.

Hair cell densities in the cristae central zones.

Treatment	Hair cell density (hair cell nuclei/100 μm2)
	Horizontal	Posterior	Superior	Average
Normal	1.65 ± 0.122 (N = 3)	1.53 ± 0.102 (N = 3)	1.69 ± 0.112 (N = 3)	1.62 ± 0.071 (N∗ = 3)
Vehicle control	1.72 ± 0.311 (N = 3)	1.67 ± 0.156 (N = 2)	1.88 ± 0.272 (N = 3)	1.79 ± 0.153 (N∗ = 3)
Contralesion control	1.67 ± 0.100 (N = 5)	1.61 ± 0.184 (N = 8)	1.74 ± 0.130 (N = 5)	1.69 ± 0.066 (N∗ = 5)
Combined control	1.68 ± 0.165 (N = 11)	1.60 ± 0.160 (N = 13)	1.77 ± 0.172 (N = 11)	1.70 ± 0.107 (N∗ = 11)
0.5 month	1.43 ± 0.167 (N = 3)	1.40 ± 0.226 (N = 3)	1.32 ± 0.321 (N = 3)	1.39 ± 0.231∗∗ (N = 3)
1 month	1.34 ± 0.388 (N = 3)	1.24 ± 0.146 (N = 3)	1.18 ± 0.244 (N = 3)	1.24 ± 0.276∗∗ (N = 3)
2 months	1.14 ± 0.066 (N = 3)	1.24 ± 0.121 (N = 3)	1.17 ± 0.035 (N = 2)	1.17 ± 0.032∗∗∗ (N = 3)
6 months	1.03 ± 0.255 (N = 3)	1.06 ± 0.208 (N = 4)	1.05 ± 0.113 (N = 3)	1.04 ± 0.171∗∗∗ (N = 4)

All values are means ± SD. N, number of specimens; N^∗, number of specimens with >2 cristae counted. Average represents hair cell density calculated when cristae from a specimen were treated as a single epithelium. Significance values represent comparisons with combined controls. These data complement that depicted in Figure 9. Asterisks correspond to: ^∗∗p < 0.01; ^∗∗∗p < 0.001.