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A, original smooth muscle Vm recording in an unstretched rat mesenteric lymphatic vessel illustrating the effect of Ni2+ (100 μm). B, summary bar graph of Vm changes caused by VDCC blockers nifedipine (300 nm), Ni2+ (100 μm) and mibefradil (100 nm). Data are expressed as the calculated differences between Vm in control condition and Vm in the presence of the blocker (n = 4, *P<0.05).
