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. Author manuscript; available in PMC: 2009 Oct 15.
Published in final edited form as: Biochem Pharmacol. 2009 Jun 21;78(8):959–965. doi: 10.1016/j.bcp.2009.06.019

Fig. 2.

Fig. 2

Exposure of ex vivo aortic rings to PCB 104 for 4 h (A) or 6 h (B) dose-dependently impairs the acetylcholine-relaxant response. Thoracic aortic rings obtained from male Sprague–Dawley rats were exposed to 1, 3, 10 or 20 μM PCB 104 for 2, 4 or 6 h. Following PCB exposure acetylcholine-induced endothelium-dependent relaxation was determined. Data is expressed as mean ± SEM from 6 animals; *p < 0.05 and **p < 0.01 vs. untreated rings.