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Comparison of permeability of icariin, epimedine A, epimedine B, epimedine C in different intestinal segements. a: icariin, b: epimedin A, c: epimedin B, d: epimedin C. Data are expressed as mean ± SD (n = 4). The statistically significant difference is shown by the asterisk symbol, icariin vs. epimedin A, epimedin B, epimedin C, * P < 0.05.
