Fig. 2.
Effect of Rosa persica hydroalcoholic and hexane extracts on tension development to second contractile responses to electrical field stimulation (6 V, 50 Hz, 1 s duration) in isolated ileum of rats. Ordinate scale: ileum contractile response expressed as percent of initial control response. Abscissa scale: log10 concentration of the extract. Lines drawn through the points, using two fold increments in concentration. The points are mean and the vertical bars show the SEM (n=6). There was no statistically difference in vehicle treated time-matched control tissues contractions over the course of study (ANOVA). Asterisks show statistically significant differences in electrical field stimulation responses in comparison with its corresponding time-matched vehicle treated control tissues ***P<0.001 (Student's t-test). Maximum concentration of vehicle (DMSO) in the bath was 1.28% and 1.6% for hexane and hydroalcoholic extract respectively.