Hair and supporting cell densities and ratios of the two cell types in each area at E9 and E12
| Central-distal | Superior-proximal | Inferior-proximal | ||||
|---|---|---|---|---|---|---|
| E9 | E12 | E9 | E12 | E9 | E12 | |
| Average number of supporting cells per 10,000 μm2 | 677 (±23.4) | 398 (±28.9) | 446 (±19.4) | 201 (±8.9) | 545 (±20) | 377 (±97) |
| (n = 17) | (n = 18) | (n = 19) | (n = 18) | (n = 28) | (n = 24) | |
| Average number of hair cells per 10,000 μm2 | 370 (±17.2) | 241 (±22.2) | 213 (±10.3) | 94 (±4.5) | 154 (±6.0) | 97 (±4.5) |
| (n = 17) | (n = 18) | (n = 19) | (n = 18) | (n = 28) | (n = 24) | |
| Average supporting cell to hair | 1.85 (±0.05):1 | 1.71 (±0.05):13-a | 2.13 (±0.07):1 | 2.14 (±0.05):13-a | 3.56 (±0.05):1 | 3.90 (±0.07):13-150 |
| cell ratios | (n = 17) | (n = 18) | (n = 19) | (n = 18) | (n = 28) | (n = 24) |
Table summarizes the average number of hair and supporting cells per 10,000 μm2, in the central-distal, superior-proximal, and inferior-proximal regions of the basilar papilla at E9 and E12. The mean ratios of supporting cells to hair cells in each region at each stage, derived from the total numbers of cells counted, are also given. Numbers in parentheses are the SEMs; n is the number of areas within each region from which counts were made.
↵F3-150 Value is significantly different from corresponding E9 value;p < 0.001.
↵F3-a Value is not significantly different from E9 value; p > 0.05.