Inactivation of Na+/K+ ATPase by ouabain. A: Danshen-induced salivary fluid secretion. CCh stimulation was conducted for 5 min as control measure. At 20 min ouabain was added for 5 min, and the DS-induced fluid secretion decreased significantly (P < 0.05 vs control). The figure shows the average (bold line, n = 5) and the standard error of the means (mean ± SE, dotted lines); B: Oxygen consumption during DS stimulation. At 25 min ouabain was added for 5 min, and the oxygen consumption decreased significantly (P < 0.05 vs control). This figure shows the average values (bold line, n = 5) and the standard error of the means (mean ± SE, dotted lines). DS: Danshen; CCh: Carbamylcholine.