TABLE 3.
Hair cell ratios and densities by region in the macular organs
| Species | Saccular Maculae
|
Utricular Maculae
|
||||||
|---|---|---|---|---|---|---|---|---|
| n | Striola | Extrastriola | Total | n | Striola | Extrastriola | Total | |
| Mouse | ||||||||
| Type I HC:Type II HC Ratio | 3 | 1.12 ± 0.01 | 1.09 ± 0.02 | 1.10 ± 0.01 | 3 | 1.47 ± 0.02 | 1.19 ± 0.01 | 1.23 ± 0.02 |
| SC:HC Ratio | 3 | 0.92 ± 0.01 | 0.81 ± 0.01 | 0.84 ± 0.01 | 3 | 1.05 ± 0.00 | 0.81 ± 0.10 | 0.85 ± 0.01 |
| HC density per 100 μm2 | 3 | 1.31 ± 0.04 | 1.36 ± 0.05 | 1.35 ± 0.05 | 3 | 1.59 ± 0.05 | 1.65 ± 0.09 | 1.64 ± 0.08 |
| SC density per 100 μm2 | 3 | 1.21 ± 0.03 | 1.10 ± 0.06 | 1.13 ± 0.06 | 3 | 1.68 ± 0.06 | 1.34 ± 0.06 | 1.39 ± 0.06 |
| Rat | ||||||||
| Type I HC:Type II HC Ratio | 3 | 1.11 ± 0.00 | 1.12 ± 0.01 | 1.12 ± 0.01 | 3 | 1.73 ± 0.03 | 1.19 ± 0.02 | 1.26 ± 0.03 |
| SC:HC Ratio | 3 | 0.97 ± 0.01 | 0.94 ± 0.00 | 0.94 ± 0.01 | 3 | 1.72 ± 0.02 | 1.56 ± 0.01 | 1.58 ± 0.01 |
| HC density per 100 μm2 | 3 | 0.86 ± 0.04 | 0.89 ± 0.04 | 0.89 ± 0.04 | 3 | 0.93 ± 0.03 | 1.01 ± 0.04 | 1.00 ± 0.04 |
| SC density per 100 μm2 | 3 | 0.84 ± 0.03 | 0.84 ± 0.04 | 0.84 ± 0.04 | 3 | 1.59 ± 0.05 | 1.57 ± 0.05 | 1.57 ± 0.05 |
| Gerbil | ||||||||
| Type I HC:Type II HC Ratio | 3 | 1.20 ± 0.01 | 1.13 ± 0.02 | 1.14 ± 0.01 | 3 | 1.34 ± 0.01 | 1.06 ± 0.02 | 1.11 ± 0.01 |
| SC:HC Ratio | 3 | 1.18 ± 0.00 | 1.09 ± 0.01 | 1.10 ± 0.01 | 3 | 1.19 ± 0.00 | 1.20 ± 0.01 | 1.20 ± 0.01 |
| HC density per 100 μm2 | 3 | 0.98 ± 0.08 | 1.36 ± 0.05 | 1.27 ± 0.06 | 3 | 1.34 ± 0.06 | 1.29 ± 0.05 | 1.30 ± 0.05 |
| SC density per 100 μm2 | 3 | 1.15 ± 0.04 | 1.48 ± 0.04 | 1.40 ± 0.04 | 3 | 1.60 ± 0.03 | 1.55 ± 0.05 | 1.56 ± 0.06 |
| Guinea pig | ||||||||
| Type I HC:Type II HC Ratio | 3 | 1.14 ± 0.01 | 0.97 ± 0.01 | 0.99 ± 0.01 | 3 | 1.13 ± 0.01 | 0.95 ± 0.03 | 0.97 ± 0.02 |
| SC:HC Ratio | 3 | 1.17 ± 0.02 | 0.99 ± 0.02 | 1.02 ± 0.02 | 3 | 1.31 ± 0.01 | 1.21 ± 0.01 | 1.22 ± 0.01 |
| HC density per 100 μm2 | 3 | 1.00 ± 0.06 | 0.98 ± 0.05 | 0.98 ± 0.05 | 3 | 1.02 ± 0.08 | 1.06 ± 0.08 | 1.00 ± 0.08 |
| SC density per 100 μm2 | 3 | 1.17 ± 0.03 | 0.97 ± 0.05 | 1.00 ± 0.04 | 3 | 1.34 ± 0.03 | 1.29 ± 0.06 | 1.30 ± 0.05 |
| Chinchilla | ||||||||
| Type I HC:Type II HC Ratio | 4 | 1.14 ± 0.02 | 1.11 ± 0.01 | 1.11 ± 0.01 | 3 | 1.27 ± 0.01 | 0.93 ± 0.00 | 0.97 ± 0.01 |
| SC:HC Ratio | 3 | 1.12 ± 0.01 | 0.88 ± 0.02 | 0.92 ± 0.01 | 3 | 1.14 ± 0.02 | 1.11 ± 0.01 | 1.11 ± 0.02 |
| HC density per 100 μm2 | 4 | 1.28 ± 0.04 | 1.39 ± 0.06 | 1.37 ± 0.05 | 3 | 1.04 ± 0.03 | 1.24 ± 0.06 | 1.21 ± 0.05 |
| SC density per 100 μm2 | 3 | 1.44 ± 0.05 | 1.19 ± 0.05 | 1.23 ± 0.05 | 3 | 1.18 ± 0.04 | 1.37 ± 0.05 | 1.34 ± 0.04 |
| Tree Squirrel | ||||||||
| Type I HC:Type II HC Ratio | 3 | 1.23 ± 0.02 | 1.03 ± 0.01 | 1.06 ± 0.01 | 3 | 1.82 ± 0.03 | 1.25 ± 0.02 | 1.35 ± 0.02 |
| SC:HC Ratio | 3 | 1.29 ± 0.02 | 1.01 ± 0.01 | 1.06 ± 0.02 | 3 | 1.02 ± 0.01 | 1.01 ± 0.00 | 1.02 ± 0.01 |
| HC density per 100 μm2 | 3 | 1.38 ± 0.04 | 1.52 ± 0.06 | 1.50 ± 0.05 | 3 | 1.57 ± 0.07 | 1.51 ± 0.07 | 1.52 ± 0.07 |
| SC density per 100 μm2 | 3 | 1.78 ± 0.05 | 1.54 ± 0.06 | 1.59 ± 0.06 | 3 | 1.60 ± 0.06 | 1.53 ± 0.08 | 1.54 ± 0.08 |
All values are means ± SE. n = number of sensory organs, SC, supporting cell.