Differences in functional and structural properties of segments of the rat tail artery
Souza, F.M.; Padilha, A.S.; Stefanon, I.; Vassallo, D.V.
Braz J Med Biol Res 2008; 41: 416-423.

Figure 4. Changes of the mean perfusion pressure (DMPP; mmHg) produced by increasing doses of phenylephrine in the tail end of the vascular bed from Wistar rats. Dose-response curves were constructed in preparations with intact endothelium before (CT) and after treatment with 5 mM tetraethylammonium (TEA). Data are reported as means ± SEM for 5-7 experiments. The horizontal line between the CT and TEA curves indicates the difference in pED50. *P < 0.01 CT vs TEA, t-test, repeated measures.