Fig. 6. Effect of sevoflurane (0.5∼1.5%) on the amplitude ( A ) and frequency ( B ) of spontaneous lymphatic vessel activity with and without endothelial function. Data are expressed as means ± SD (n = 8 and 7, respectively). Solid circles = data obtained with endothelial function; open circles = data obtained without endothelial function. * P < 0.05, ** P < 0.01 versus control.