Table 1.
Quantification of the retino-retinally projecting GCs in the chick
| Age | Ganglion cell bodies | Axons | Microglia | Müller cells | ||
|---|---|---|---|---|---|---|
| Vital | With dendrites | Apoptotic | ||||
| E6 | 7 | None | None | 4 | None | None |
| 11 | None | None | 17 | None | None | |
| 5 | None | None | 20 | None | None | |
| 22 | None | None | 3 | None | None | |
| 20 | None | None | 7 | None | None | |
| E9 | 39 | 13 | None | 66 | None | ND |
| 52 | 5 | 1 | 60 | None | ND | |
| 50 | 22 | None | 74 | None | ND | |
| 61 | 20 | 2 | 19 | None | ND | |
| 27 | 12 | 1 | 14 | None | ND | |
| E14 | 756 | 600 | 800 | 512 | None | 67 |
| 111 | 92 | 176 | 37 | None | 210 | |
| 1140 | 902 | 1203 | 900 | None | ND | |
| 800 | 512 | 1100 | 207 | None | ND | |
| 117 | 92 | 163 | 125 | None | ND | |
| 1300 | 1200 | 907 | 56 | None | 27 | |
| E16 | 26 | 26 | 116 | 63 | 11 | ND |
| 50 | 50 | 300 | 17 | None | ND | |
| 10 | 10 | 76 | 3 | None | ND | |
| 21 | 21 | 112 | 27 | 37 | 7 | |
| 6 | 6 | 76 | 2 | 30 | 19 | |
| E18 | 1 | 1 | 17 | 1 | 305 | None |
| None | None | 3 | None | 1105 | 37 | |
| 3 | 2 | 21 | None | 300 | ND | |
| 1 | 1 | 10 | None | 802 | ND | |
| None | None | 6 | None | 700 | 33 | |
| P11 | None | None | None | None | None | None |
| None | None | None | None | None | None | |
| None | None | None | None | None | None | |
Counts of ganglion cell bodies retrogradely labeled from the injected eye, axonal tips anterogradely labeled from the injected eye, and phagocytosing cells. Although the numbers of GCs and axons increase between E6 and E14, they completely disappear at latest embryonic and early postnatal life (P11). Müller cells could only be counted in sections, thus counted only in representative specimens. The others are entered as not determined (ND). Microglial cells were counted in whole-mounted retinas. The ganglion cell populations were subdivided into vital cells (as far as deducible from morphology) and dead cells showing typical apoptotic changes.