Fig. 7
Effects of S. helianthus extract (100 μg/mL) upon indirect evoked twitches on mouse phrenic-diaphragm preparation. The ordinate represents the % amplitude of twitches relative to the initial amplitude. The abscissa indicates the time (min) after the addition of the extract to the organ bath. Vertical bars represent the SEM; *indicates the point from which there are significant differences relative to control (p < 0.05)