Table 1.
Effects of visual deprivation (DD) and light exposure (LL) on identified cells or cell types in the lamina. LL flies have significantly larger cells than DD flies at the distal margin of the lamina but not at the proximal margin. The resulting overall volume decrease would be 15.8%. Cross-sectional area of cell profile(s), mean ± SD (μm2), n = 7-8.
| DD flies | LL flies | Δ (%) | Significance | |
|---|---|---|---|---|
| Proximal | ||||
| Cartridge size | 11.5 ± 0.9 | 13.2 ± 3.1 | 12.7 | p > 0.1 NS |
| Photoreceptors | 10.8 ± 0.2 | 12.2 ± 2.8 | 11.4 | p > 0.1 NS |
| Monopolar cells (L1 + L2) | 0.75 ± 0.2 | 1.0 ± 0.3 | 22.4 | p > 0.1 NS |
| Glia cells | 4.8 ± 0.6 | 3.6 ± 0.7 | −24.7 | p < 0.005 |
| Sum (cartridge + glia) | 16.3 ± 1 | 16.8 ± 3.5 | 3.0 | p > 0.1 NS |
| Distal | ||||
| Cartridge size | 13.5 ± 1.6 | 19.8 ± 4.3 | 31.6 | p < 0.005 |
| Photoreceptors | 12.8 ± 1.5 | 18.7 ± 4.1 | 31.6 | p < 0.005 |
| Monopolar cells (L1 + L2) | 0.74 ± 0.2 | 1.18 ± 0.2 | 37.3 | p < 0.001 |
| Glia cells | 6.1 ± 1.6 | 7.7 ± 1.9 | 20.5 | p > 0.1 NS |
| Sum (cartridge + glia) | 19.6 ± 2.9 | 27.5 ± 5.6 | 28.5 | p < 0.005 |