Fig. 2.
The percent transported of ursolic acid for pure compound and S. officinalis extract across Caco-2 cell monolayer as a function of concentration at 5–20 μM after 4 h uptake study. S. officinalis extract was diluted to apply the same concentrations to the cells as were used for the pure compounds. Data are the mean ± S.D (n=9). Means bearing different letters were significantly different (p < 0.01).