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Effect of treatment with 50 μM BaCl2 on relaxation responses to 1 μM acetylcholine or 5 mM potassium of Wistar mesenteric small arteries incubated in 5.5 mM potassium PSS or 1.5 mM potassium PSS. Relaxation responses were all carried out on noradrenaline (10 μM) preconstricted arteries in the presence of 4 μM ODQ and 10 μM indomethacin. *P<0.05 before treatment vs after BaCl2. **P<0.01 before treatment vs after BaCl2 (n=4).
