Phenylephrine concentration-response curves in the aortic rings of control (A) and cadmium-exposed (B) rats after apocynin incubation.

<p>Differences in the area under the concentration-response curve (dAUC) in the aortic rings of control and cadmium-treated rats after apocynin incubation (C). Densitometric analysis of the western blot to measure the gp^91phox protein expression in aortic rings (D). Representative blots are also shown. *P<0.05, Student’s t-test. The number of animals used is indicated in parentheses.