Figure 6.

Pericyte proximity does not determine dilation amplitude. A, Whole-mount confocal image of superficial layer vessels labeled for α-SMA (red) and NG2 (green). Pericyte somata are indicated by arrowheads. Scale bar, 20 μm. B, Scatter plot of flicker-evoked dilation versus distance from pericyte somata for capillaries in the three vascular layers. C, Time course of flicker-evoked capillary dilation for each of the three vascular layers, measured at sites close (≤10 μm), at a medium distance (>10 and ≤25 μm), and far (>25 μm) from pericyte somata. D, Mean distance from pericyte somata for capillaries in each vascular layer that responded to flicker with a dilation (Dil), a constriction (Con), or no change in diameter (NC).