Summary (average ± SD) of morphologic properties of RGCs and ACs in the GCL of Rbp4-Cre mouse
| R-cell (n = 13) | R-cell EM (n = 1) | RDS (n = 4) | RAC (n = 4) | |
|---|---|---|---|---|
| Soma diameter (μm) | 12.9 ± 1.0 (n = 16) | 16.1 | 17.5 ± 2.0 (n = 4) | 11.2 ± 1.4 (n = 46) |
| ON dendritic field diameter (μm) | 178 ± 35 | 192 | 177 ± 15 | 970 ± 130 |
| OFF dendritic field diameter (μm) | 138 ± 36 | 189 | 194 ± 27 | |
| Global dendritic field diameter (μm) | 186 ± 33 | 218 | 229 ± 6 | |
| Total dendrite length (μm) | 2912 ± 1076 | 3883 | 4965 ± 981 | 6765 ± 1595 |
| Branch points | 53 ± 15 | 47 | 95 ± 11 | 16 ± 5 |
| Primary dendrites | 5 ± 2 | 3 | 4 ± 1 | 5 ± 1 |
| ON/OFF ratio of dendritic field diameter | 1.3 ± 0.2 | 1 | 0.9 ± 0.1 | |
| % of total branch points in inner IPL | 61 ± 8 | 55 | 42 ± 3 | |
| % of total dendritic length in inner IPL | 62 ± 7 | 58 | 34 ± 6 |
Soma diameters were estimated from photomicrographs of whole-mounted Rbp4-Cre;Ai14 retinas with exposures optimized for crisp definition of somatic profiles, thus avoiding overestimates from “bloom” of intense somatic fluorescence. Global dendritic field diameter represents the diameter of a circle that has the same area as a convex polygon minimally enclosing both inner and outer arbors.