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. Author manuscript; available in PMC: 2010 Apr 21.
Published in final edited form as: Hear Res. 2004 Feb;188(1-2):21–28. doi: 10.1016/S0378-5955(03)00365-4

Fig. 3.

Fig. 3

Mean (S.E.M.) spiral ganglion cell density in the basal, middle and apical regions of Rosenthal’s canal for each of the three mouse strains as a function of age. All strains show a decrease in ganglion cell density in each turn with age (ANOVA, P < 0.001). In the basal turn, the B6 mice have severe spiral ganglion cell degeneration. Comparison among the strains show that the B6.CAST-+ahl and CAST mice have significantly more cells in the basal turn than do the B6 mice even at the oldest ages (ANOVA, P < 0.001). Sixty-seven cochleae were used in this analysis: 9 months, B6, n = 7 cochleae, CAST, n = 0, B6.CAST-+ahl, n = 3; 12 months, B6, n = 4, CAST, n = 1, B6.CAST-+ahl, n = 5; 15–16 months, B6, n = 6, CAST, n = 7, B6.CAST-+ahl, n = 6; 18–21 months, B6, n = 4, CAST, n = 6, B6.CAST-+ahl, n = 9; 24 months B6, n = 7, CAST, n = 4, B6.CAST-+ahl, n = 7.