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 1. Changes of the mean perfusion pressure (DMPP; mmHg) produced by increasing doses of phenylephrine in the whole tail (A), base (B), middle (C), and end (D) of the vascular bed from Wistar rats. Dose-response curves were constructed in preparations with (E+) and without (E-) endothelium. Data are reported as means ± SEM for 5-10 experiments. The line between the curves E+ and E- represents the difference in pED50 or Emax. *P < 0.05 and **P < 0.01, E+ vs E-, t-test, repeated measures.