Drag reduction by polyethylene glycol in the tail arterial bed of normotensive and hypertensive rats. K.L. Bessa, J.F. Belletati, L. dos Santos, L.V. Rossoni
and J.P. Ortiz.
Figure 3. A, Active internal diameters of tail arteries from Wistar rats (N = 4 animals) and spontaneously hypertensive rats (SHR, N = 5 animals) fixed at a volumetric flow rate of 2.5 mL/min. *P < 0.05 vs proximal portion; #P < 0.05 vs Wistar rats (two-way ANOVA followed by the Bonferroni post hoc test). B, Photomicrograph of transverse sections of proximal and distal tail artery from Wistar rats and SHR. Magnification: 10X. Inset panels in the proximal tail artery photomicrographs of Wistar and SHR are amplified images showing the endothelial (E), medium (M) and adventitial (A) layers of the artery.