Fig. 1.

Endoneurial blood vessel from a diabetic cat (a) with areas and perimeters used for morphometric measurements designated on this vessel by color code (b) as follows: luminal area - yellow; endothelial cell area - blue; basement membrane area - red; pericyte area - purple; luminal perimeter -orange; outer endothelial cell perimeter - green; and inner pericyte perimeter -pink. Dashed red line denotes outer extent of basement membrane not enclosed by pericyte processes. Inset shows region outlined in (b). Bar 1.5 μm.