Figure 4.

Dietary potassium supplementation has no effect on the wall thickness (A) or the wall/lumen ratio in the WYK rats. Arteries were mounted in a small vessel arteriograph and the wall thickness and lumen diameters of the vessels were measured over a range of intralumenal pressures (20–180 mmHg) under zero flow and calcium free conditions and the wall/lumen ratio was calculated. Results were compared by a two way repeated measures ANOVA (NS) n = 5 for the HK group and 6 for the LK group.