Differences between retinal and brain capillaries of 10 diabetic and normal dogs. Duration of diabetes: 5 years
| Abnormality | Retina | Brain | Normal retina |
| Microaneurysms | 43 | 0 | 0 |
| Pericyte ghosts | 25 | 0 | 3 |
| Acellular capillaries | 195 | 0 | 0 |
| Thickness of basement membrane (nm) | 237 | 171 | 135 |
From Kern and Engermann.1 The original contains the statistics and similar data on other dogs made diabetic with galactose.