Figure 1.

Changes in diameter in responses to increases in flow and pressure in mesenteric resistance artery isolated from SHR (n=28) and WKY rats (n=28). The arterial diameter was measured in arteries segments with or without flow (ligated arteries). Changes in diameter are represented as a function of flow rate (upper panel) or pressure (middle panel). Flow-induced dilation (lower panel) was estimated as the difference in diameter between arteries submitted to flow and pressure and arteries submitted to pressure only in SHR and WKY rats. Mean±s.e.mean are represented. ^*P<0.001, ANOVA for repeated measures.